ASTROSAT CZTI

Data Quality Report

Orbit 57594

Creation date: 2026-05-21T10:39:04.004212
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_070T08_9000006576_57594cztM0_level2.fits modeM0/AS1A14_070T08_9000006576_57594cztM0_level2_quad_clean.evt
Size (bytes)2,112,966,720401,474,880
Size2.0 GB 382.9 MB
Events in quadrant A14,810,0582,692,374
Events in quadrant B14,419,3292,883,645
Events in quadrant C18,194,6922,515,547
Events in quadrant D28,556,5572,077,384

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0646625
B0637965
C0748755
D01046505

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0370

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05860
B05860
C05860
D05860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A288985001.730224%
B288995932.051974%
C2889911433.955154%
D28899497217.204748%

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 32748 29188 292 292 0.89% 1.00%
B 32749 29184 272 272 0.83% 0.93%
C 32749 29189 813 813 2.48% 2.79%
D 32749 29110 4482 4482 13.69% 15.40%

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 4 249 1893888 2489.9 3085 3003 759.4
A 3 14 327804 427.69 3085 3003 759.4
A 10 251 232717 302.48 3085 3003 759.4
B 2 249 1282323 1976.74 3048 2924 647.2
B 0 63 190516 289.84 3048 2924 647.2
B 7 252 143935 217.87 3048 2924 647.2
C 15 224 5471073 6835.08 2967 2933 800.0
C 15 198 237299 292.95 2967 2933 800.0
C 14 245 237104 292.71 2967 2933 800.0
D 15 142 11572353 15013.08 2726 2604 770.6
D 15 94 1973447 2557.4 2726 2604 770.6
D 2 249 1105252 1430.81 2726 2604 770.6

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