ASTROSAT CZTI

Data Quality Report

Orbit 58791

Creation date: 2026-08-09T22:36:26.364269
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_106T01_9000006596_58791cztM0_level2.fits modeM0/AS1A14_106T01_9000006596_58791cztM0_level2_quad_clean.evt
Size (bytes)588,504,96077,474,880
Size561.2 MB 73.9 MB
Events in quadrant A3,355,833581,462
Events in quadrant B3,277,432618,538
Events in quadrant C2,893,652556,136
Events in quadrant D11,794,805174,553

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01415853
B01400460
C01309243
D039392354

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59481342.252858%
B59461352.270434%
C5950891.495798%
D5929418970.652724%

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 6835 5957 84 84 1.23% 1.41%
B 6834 5960 49 49 0.72% 0.82%
C 6831 5958 50 50 0.73% 0.84%
D 6817 5929 3910 3910 57.36% 65.95%

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 15 233 522713 3219.08 656 640 162.2
A 10 251 68376 417.66 656 640 162.2
A 8 251 57501 350.6 656 640 162.2
B 4 171 250832 1798.03 650 627 139.2
B 10 247 98968 706.7 650 627 139.2
B 0 63 80004 570.42 650 627 139.2
C 6 223 126741 709.89 641 634 177.6
C 13 3 75399 420.87 641 634 177.6
C 6 13 34745 192.02 641 634 177.6
D 12 110 5505275 51197.17 377 361 107.5
D 13 138 2547649 23690.46 377 361 107.5
D 11 129 1997472 18573.67 377 361 107.5

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

TCT plots

Parameter TCT0 TCT_healed
Tct