ASTROSAT CZTI

Data Quality Report

Orbit 32767

Creation date: 2024-06-27T20:41:48.295146
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/AS1T04_064T01_9000004730_32767cztM0_level2.evt modeM0/AS1T04_064T01_9000004730_32767cztM0_level2_quad_clean.evt
Size (bytes)554,783,04057,715,200
Size529.1 MB 55.0 MB
Events in quadrant A3,029,580347,754
Events in quadrant B3,635,184348,572
Events in quadrant C2,885,681351,537
Events in quadrant D6,868,386303,703

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126543
B0144532
C0122082
D0244602

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5650831.469027%
B56502294.053097%
C5650671.185841%
D565088815.716814%

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 7352 5651 51 51 0.69% 0.90%
B 7352 5651 118 118 1.61% 2.09%
C 7352 5651 48 48 0.65% 0.85%
D 7352 5651 645 645 8.77% 11.41%

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 15 237 254079 1881.45 669 656 134.7
A 12 16 129827 958.98 669 656 134.7
A 12 194 22587 162.82 669 656 134.7
B 12 1 365823 2830.7 672 658 129.0
B 5 172 103679 798.6 672 658 129.0
B 0 197 81386 625.79 672 658 129.0
C 0 10 258370 1699.34 652 657 151.7
C 3 233 31595 204.0 652 657 151.7
C 14 67 14797 93.24 652 657 151.7
D 8 195 1351153 8878.41 604 589 152.1
D 2 250 1324185 8701.13 604 589 152.1
D 12 17 1315075 8641.24 604 589 152.1

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