ASTROSAT CZTI

Data Quality Report

Orbit 56753

Creation date: 2026-03-25T20:36:56.232042
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_083T05_9000006560_56753cztM0_level2.fits modeM0/AS1A14_083T05_9000006560_56753cztM0_level2_quad_clean.evt
Size (bytes)865,601,280153,141,120
Size825.5 MB 146.0 MB
Events in quadrant A7,475,6651,013,511
Events in quadrant B10,102,4301,017,791
Events in quadrant C7,722,702929,155
Events in quadrant D5,898,338923,066

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02220
B02220
C02220
D02220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0293772
B0375582
C0309642
D0251522

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A108775885.405902%
B10878146713.485935%
C108789518.742416%
D108783453.171539%

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 13042 10879 371 371 2.84% 3.41%
B 13043 10880 974 974 7.47% 8.95%
C 13043 10880 726 726 5.57% 6.67%
D 13043 10880 203 203 1.56% 1.87%

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 62 1228733 4336.71 1154 1125 283.1
A 3 14 1155005 4076.26 1154 1125 283.1
A 10 251 278628 980.32 1154 1125 283.1
B 4 206 4067475 17170.82 1113 1074 236.8
B 5 185 1090930 4602.03 1113 1074 236.8
B 8 128 120220 503.11 1113 1074 236.8
C 15 230 2225347 7413.63 1098 1092 300.0
C 15 215 508884 1692.51 1098 1092 300.0
C 9 38 158422 524.39 1098 1092 300.0
D 2 249 509450 1577.59 1128 1073 322.2
D 7 238 198341 612.16 1128 1073 322.2
D 8 129 164991 508.67 1128 1073 322.2

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