ASTROSAT CZTI

Data Quality Report

Orbit 57136

Creation date: 2026-04-20T15:17:09.212090
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_083T10_9000006566_57136cztM0_level2.fits modeM0/AS1A14_083T10_9000006566_57136cztM0_level2_quad_clean.evt
Size (bytes)1,368,552,960161,435,520
Size1.3 GB 154.0 MB
Events in quadrant A8,212,0001,128,160
Events in quadrant B7,939,9661,256,282
Events in quadrant C14,320,144766,590
Events in quadrant D19,179,981837,012

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340191
B0327521
C0517511
D0661511

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02640
B02640
C02640
D02640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1302110237.856539%
B130218416.458797%
C13021474636.448813%
D13020346326.597542%

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 13366 13021 865 865 6.47% 6.64%
B 13366 13021 489 489 3.66% 3.76%
C 13366 13023 3276 3276 24.51% 25.16%
D 13365 13020 3483 3483 26.06% 26.75%

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 3 14 2764122 8188.98 1372 1337 337.4
A 5 113 65009 188.73 1372 1337 337.4
A 10 251 55530 160.63 1372 1337 337.4
B 10 16 1743528 6004.12 1356 1303 290.2
B 5 172 428351 1471.71 1356 1303 290.2
B 0 213 95351 324.11 1356 1303 290.2
C 15 198 9225189 34041.34 1005 994 271.0
C 12 252 1102026 4063.29 1005 994 271.0
C 14 254 52218 189.04 1005 994 271.0
D 15 142 12843155 36892.98 1242 1187 348.1
D 8 240 344742 986.98 1242 1187 348.1
D 2 249 316797 906.7 1242 1187 348.1

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