ASTROSAT CZTI

Data Quality Report

Orbit 56316

Creation date: 2026-02-24T10:33:46.303635
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_049T01_9000006552_56316cztM0_level2.fits modeM0/AS1A14_049T01_9000006552_56316cztM0_level2_quad_clean.evt
Size (bytes)856,056,96074,496,960
Size816.4 MB 71.0 MB
Events in quadrant A15,831,07583,054
Events in quadrant B4,846,170649,683
Events in quadrant C3,140,702594,962
Events in quadrant D7,367,739475,202

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0514155
B0187751
C0140371
D0263271

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6486581389.623805%
B64864026.197965%
C6487520.801603%
D6487111117.126561%

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 7551 6486 5314 5314 70.37% 81.93%
B 7551 6487 263 263 3.48% 4.05%
C 7552 6488 11 11 0.15% 0.17%
D 7552 6488 1077 1077 14.26% 16.60%

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 32 9043312 96866.57 368 360 93.4
A 4 95 3180095 34060.78 368 360 93.4
A 3 14 1071513 11474.01 368 360 93.4
B 5 172 1344406 9349.41 680 656 143.7
B 1 255 265140 1840.2 680 656 143.7
B 0 231 184182 1276.92 680 656 143.7
C 12 252 307838 1640.59 680 675 187.2
C 12 94 73704 390.06 680 675 187.2
C 6 223 22083 114.34 680 675 187.2
D 8 160 1971052 11069.37 626 596 178.0
D 8 240 1825967 10254.33 626 596 178.0
D 2 249 504085 2828.43 626 596 178.0

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