ASTROSAT CZTI

Data Quality Report

Orbit 31998

Creation date: 2024-06-27T20:35:04.130991
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1C06_010T03_9000004676_31998cztM0_level2.evt modeM0/AS1C06_010T03_9000004676_31998cztM0_level2_quad_clean.evt
Size (bytes)1,105,179,840233,688,960
Size1.0 GB 222.9 MB
Events in quadrant A5,847,7491,617,692
Events in quadrant B10,753,4571,564,838
Events in quadrant C7,799,3131,536,601
Events in quadrant D8,227,7061,495,609

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02540
B02540
C02540
D02540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0257512
B0416962
C0316132
D0329273

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12486430.344386%
B124877035.629855%
C124873492.794907%
D124867325.862566%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 13926 12488 26 26 0.19% 0.21%
B 13927 12487 462 462 3.32% 3.70%
C 13927 12488 77 77 0.55% 0.62%
D 13926 12486 672 672 4.83% 5.38%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 15 174 116088 386.7 1478 1448 296.5
A 13 6 25174 80.03 1478 1448 296.5
A 13 254 23359 73.91 1478 1448 296.5
B 6 159 3425655 12695.31 1433 1395 269.7
B 5 172 989993 3665.19 1433 1395 269.7
B 10 245 536447 1983.68 1433 1395 269.7
C 3 233 1690290 5156.04 1410 1417 327.6
C 0 10 287096 872.16 1410 1417 327.6
C 14 238 230275 698.69 1410 1417 327.6
D 13 249 1834286 5537.92 1398 1357 331.0
D 8 195 585599 1765.2 1398 1357 331.0
D 12 218 189573 568.67 1398 1357 331.0

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter