ASTROSAT CZTI

Data Quality Report

Orbit 58557

Creation date: 2026-07-25T04:33:50.834311
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/AS1A14_044T04_9000006592_58557cztM0_level2.fits modeM0/AS1A14_044T04_9000006592_58557cztM0_level2_quad_clean.evt
Size (bytes)400,227,84096,523,200
Size381.7 MB 92.1 MB
Events in quadrant A3,444,198633,595
Events in quadrant B3,941,239678,701
Events in quadrant C2,898,483610,438
Events in quadrant D4,036,103555,520

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147073
B0160953
C0133403
D0164223

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6364560.879950%
B63641592.498429%
C6364200.314268%
D63641872.938404%

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 7544 6366 23 23 0.30% 0.36%
B 7544 6366 71 71 0.94% 1.12%
C 7544 6366 12 12 0.16% 0.19%
D 7544 6366 164 164 2.17% 2.58%

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 10 248 484582 2766.24 705 690 174.9
A 10 17 136603 776.97 705 690 174.9
A 4 3 22899 126.96 705 690 174.9
B 0 171 167481 1117.72 700 676 149.2
B 5 185 151489 1010.56 700 676 149.2
B 8 234 149361 996.3 700 676 149.2
C 12 252 49958 259.4 688 683 190.0
C 12 249 49599 257.51 688 683 190.0
C 6 223 36248 187.22 688 683 190.0
D 3 12 480980 2495.77 671 642 192.5
D 2 31 286849 1487.09 671 642 192.5
D 9 102 190635 987.18 671 642 192.5

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