ASTROSAT CZTI

Data Quality Report

Orbit 56722

Creation date: 2026-03-23T19:28:31.309353
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_083T06_9000006558_56722cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56722cztM0_level2_quad_clean.evt
Size (bytes)828,204,480165,015,360
Size789.8 MB 157.4 MB
Events in quadrant A7,709,0191,084,892
Events in quadrant B5,440,6901,180,429
Events in quadrant C10,314,557924,256
Events in quadrant D6,266,025979,993

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02380
B02380
C02380
D02380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310706
B0253192
C0392044
D0274612

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A119516225.204585%
B119523072.568608%
C11951178314.919254%
D119523522.945114%

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 11982 11954 294 294 2.45% 2.46%
B 11982 11954 27 27 0.23% 0.23%
C 11981 11952 1397 1397 11.66% 11.69%
D 11982 11953 174 174 1.45% 1.46%

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 875370 2754.03 1284 1248 317.4
A 3 62 818904 2576.12 1284 1248 317.4
A 8 26 535552 1683.39 1284 1248 317.4
B 10 247 165548 594.44 1282 1231 276.4
B 10 16 77483 275.85 1282 1231 276.4
B 12 111 33893 118.16 1282 1231 276.4
C 13 3 3639846 11357.96 1189 1179 320.4
C 9 38 935176 2915.44 1189 1179 320.4
C 14 96 392255 1220.73 1189 1179 320.4
D 2 249 444138 1277.3 1254 1198 346.8
D 11 247 295891 849.8 1254 1198 346.8
D 3 12 112130 319.89 1254 1198 346.8

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