ASTROSAT CZTI

Data Quality Report

Orbit 20251107_A14_103T01_9000006524_level2

Creation date: 2025-11-26T12:33:59.648069
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_103T01_9000006524cztM0_level2.fits modeM0/AS1A14_103T01_9000006524cztM0_level2_quad_clean.evt
Size (bytes)3,819,222,7201,931,999,040
Size3.6 GB 1.8 GB
Events in quadrant A23,309,9227,542,918
Events in quadrant B20,092,3066,391,714
Events in quadrant C21,448,0156,378,518
Events in quadrant D18,737,3926,163,220

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A096440
B097440
C097490
D097480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010326280
B015081110
C013690570
D013878430

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05390
B05350
C05390
D05340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A46707094202.016828%
B4655416104013.111627%
C466909413958.865753%
D466640389918.355692%

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 565826 467272 0 0 0.00% 0.00%
B 565826 461643 0 0 0.00% 0.00%
C 565826 465920 0 0 0.00% 0.00%
D 565825 465806 0 0 0.00% 0.00%

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 14 188 25962 9.82 6115 5622 2070.4
A 9 255 23668 8.72 6115 5622 2070.4
A 14 204 21080 7.47 6115 5622 2070.4
B 2 9 22845 14.48 5298 5001 1232.4
B 2 8 20871 12.88 5298 5001 1232.4
B 3 25 16582 9.4 5298 5001 1232.4
C 15 175 17030 5.98 5725 5188 1980.1
C 2 31 16925 5.93 5725 5188 1980.1
C 7 221 16298 5.61 5725 5188 1980.1
D 6 218 24101 10.72 5353 4735 1805.9
D 15 11 17955 7.32 5353 4735 1805.9
D 8 12 17585 7.12 5353 4735 1805.9

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