ASTROSAT CZTI

Data Quality Report

Orbit 36264

Creation date: 2022-06-13T15:36:02.694426
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/AS1A10_071T36_9000005182_36264cztM0_level2.evt modeM0/AS1A10_071T36_9000005182_36264cztM0_level2_quad_clean.evt
Size (bytes)453,228,48055,742,400
Size432.2 MB 53.2 MB
Events in quadrant A2,707,701334,460
Events in quadrant B3,654,850332,881
Events in quadrant C2,882,384328,020
Events in quadrant D4,106,959306,446

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114243
B0144542
C0117322
D0160172

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A551180.145164%
B55112694.881147%
C5511290.526220%
D55112674.844856%

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 9367 5513 1 1 0.01% 0.02%
B 9367 5513 194 194 2.07% 3.52%
C 9367 5513 24 24 0.26% 0.44%
D 9367 5513 239 239 2.55% 4.34%

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 83 179501 1354.16 648 635 132.1
A 10 255 18270 133.51 648 635 132.1
A 13 254 7015 48.3 648 635 132.1
B 5 172 611038 4928.25 635 619 123.9
B 4 171 275101 2216.04 635 619 123.9
B 5 236 172074 1384.25 635 619 123.9
C 15 214 232443 1568.66 628 633 147.8
C 0 10 171896 1158.94 628 633 147.8
C 0 207 13973 90.27 628 633 147.8
D 12 6 834244 5490.3 616 601 151.8
D 13 249 239706 1574.72 616 601 151.8
D 13 171 174221 1143.45 616 601 151.8

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