ASTROSAT CZTI

Data Quality Report

Orbit 38394

Creation date: 2024-06-27T21:52:10.221483
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/AS1A12_025T10_9000005384_38394cztM0_level2.fits modeM0/AS1A12_025T10_9000005384_38394cztM0_level2_quad_clean.evt
Size (bytes)337,855,68080,827,200
Size322.2 MB 77.1 MB
Events in quadrant A2,750,554545,223
Events in quadrant B2,519,081557,346
Events in quadrant C2,322,708527,660
Events in quadrant D4,536,133476,291

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112322
B0107031
C098641
D0171901

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4854460.947672%
B4854340.700453%
C485430.061805%
D48542254.635352%

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 6227 4855 26 26 0.42% 0.54%
B 6227 4855 8 8 0.13% 0.16%
C 6227 4855 0 0 0.00% 0.00%
D 6227 4855 226 226 3.63% 4.65%

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 10 83 301732 2673.36 547 537 112.7
A 13 248 110569 976.63 547 537 112.7
A 9 143 107271 947.36 547 537 112.7
B 0 183 203268 1915.52 545 531 105.8
B 4 171 45068 420.8 545 531 105.8
B 0 186 35489 330.29 545 531 105.8
C 15 214 200155 1587.16 534 537 125.8
C 3 233 12006 91.19 534 537 125.8
C 15 159 10667 80.54 534 537 125.8
D 10 203 1936089 15025.33 527 510 128.8
D 13 171 118465 915.65 527 510 128.8
D 2 16 82655 637.67 527 510 128.8

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