ASTROSAT CZTI

Data Quality Report

Orbit 57334

Creation date: 2026-05-03T21:56:45.928036
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_102T01_9000006572_57334cztM0_level2.fits modeM0/AS1A14_102T01_9000006572_57334cztM0_level2_quad_clean.evt
Size (bytes)496,517,76086,106,240
Size473.5 MB 82.1 MB
Events in quadrant A2,986,540594,237
Events in quadrant B2,807,989633,496
Events in quadrant C5,884,772480,973
Events in quadrant D6,239,513483,668

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131381
B0125311
C0216481
D0226121

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5931911.534311%
B5931801.348845%
C593297416.419420%
D593275812.778152%

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 7081 5932 23 23 0.32% 0.39%
B 7081 5932 15 15 0.21% 0.25%
C 7082 5933 735 735 10.38% 12.39%
D 7082 5933 679 679 9.59% 11.44%

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 9 46 333776 2048.55 657 640 162.6
A 0 12 71276 434.36 657 640 162.6
A 8 4 14481 85.11 657 640 162.6
B 5 185 45259 322.33 645 620 138.5
B 0 213 44564 317.31 645 620 138.5
B 7 252 32581 230.78 645 620 138.5
C 15 224 3322583 20993.51 574 566 158.2
C 14 254 156423 984.94 574 566 158.2
C 9 237 45270 282.51 574 566 158.2
D 3 224 2613341 15241.71 599 572 171.4
D 8 240 785767 4580.47 599 572 171.4
D 15 142 183486 1067.04 599 572 171.4

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