ASTROSAT CZTI

Data Quality Report

Orbit 57992

Creation date: 2026-06-17T04:32:27.878604
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_031T01_9000006584_57992cztM0_level2.fits modeM0/AS1A14_031T01_9000006584_57992cztM0_level2_quad_clean.evt
Size (bytes)693,339,84093,813,120
Size661.2 MB 89.5 MB
Events in quadrant A5,199,857639,823
Events in quadrant B7,786,474598,100
Events in quadrant C7,490,531536,915
Events in quadrant D4,653,074583,458

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0202182
B0279462
C0272062
D0184992

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69164075.884905%
B6916136819.780220%
C6916120317.394448%
D69161492.154425%

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 7591 6918 273 273 3.60% 3.95%
B 7591 6918 984 984 12.96% 14.22%
C 7591 6918 1160 1160 15.28% 16.77%
D 7591 6918 143 143 1.88% 2.07%

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 10 251 2155234 11824.94 738 717 182.2
A 4 236 49939 270.15 738 717 182.2
A 3 14 38993 210.08 738 717 182.2
B 10 128 4664331 30838.35 698 673 151.2
B 5 248 75033 491.7 698 673 151.2
B 0 153 48661 317.32 698 673 151.2
C 15 201 3454525 18759.7 671 664 184.1
C 15 224 1349916 7328.48 671 664 184.1
C 14 254 18302 95.8 671 664 184.1
D 12 110 1033227 5069.08 717 686 203.7
D 3 224 230484 1128.15 717 686 203.7
D 13 138 201033 983.57 717 686 203.7

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