ASTROSAT CZTI

Data Quality Report

Orbit 57743

Creation date: 2026-05-31T10:37:32.255204
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_083T16_9000006580_57743cztM0_level2.fits modeM0/AS1A14_083T16_9000006580_57743cztM0_level2_quad_clean.evt
Size (bytes)465,805,44093,006,720
Size444.2 MB 88.7 MB
Events in quadrant A3,843,601623,560
Events in quadrant B3,680,109669,865
Events in quadrant C5,940,588537,469
Events in quadrant D3,294,173550,545

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156071
B0151872
C0219641
D0142731

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6233801.283491%
B6233691.107011%
C623378412.578213%
D62331211.941280%

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 7437 6232 56 56 0.75% 0.90%
B 7437 6232 20 20 0.27% 0.32%
C 7437 6232 739 739 9.94% 11.86%
D 7437 6232 86 86 1.16% 1.38%

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 7 160 1034556 6265.98 666 649 165.0
A 3 128 188068 1135.85 666 649 165.0
A 3 61 30041 178.13 666 649 165.0
B 4 80 724995 5159.52 661 637 140.4
B 0 63 122820 870.3 661 637 140.4
B 10 16 76345 539.26 661 637 140.4
C 15 224 2659328 15712.56 624 618 169.2
C 9 38 406290 2397.46 624 618 169.2
C 12 249 196979 1160.46 624 618 169.2
D 3 224 246831 1366.85 644 616 180.1
D 13 138 210606 1165.75 644 616 180.1
D 2 249 82968 457.17 644 616 180.1

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