ASTROSAT CZTI

Data Quality Report

Orbit 57413

Creation date: 2026-05-09T06:17:18.417855
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_102T01_9000006572_57413cztM0_level2.fits modeM0/AS1A14_102T01_9000006572_57413cztM0_level2_quad_clean.evt
Size (bytes)550,488,960100,353,600
Size525.0 MB 95.7 MB
Events in quadrant A3,430,947679,138
Events in quadrant B3,821,529676,260
Events in quadrant C7,969,904551,374
Events in quadrant D4,539,669581,218

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016639325
B017602300
C029692461
D019481324

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01604
B01604
C01602
D01600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7917130.164204%
B7928760.958628%
C7905127016.065781%
D79271351.703040%

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 8272 8238 2 2 0.02% 0.02%
B 8276 8237 28 28 0.34% 0.34%
C 8294 8219 1034 1034 12.47% 12.58%
D 8294 8239 115 115 1.39% 1.40%

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 0 12 35731 166.66 855 833 209.4
A 3 14 25531 117.95 855 833 209.4
A 3 245 13936 62.58 855 833 209.4
B 4 216 112483 615.06 847 814 181.6
B 10 246 89954 490.97 847 814 181.6
B 7 252 84708 462.08 847 814 181.6
C 15 224 4343535 21081.43 758 751 206.0
C 14 254 183267 886.0 758 751 206.0
C 6 223 143627 693.57 758 751 206.0
D 8 240 623315 2686.77 818 780 231.7
D 3 12 178787 768.25 818 780 231.7
D 7 96 109653 469.88 818 780 231.7

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