ASTROSAT CZTI

Data Quality Report

Orbit 45624

Creation date: 2024-06-27T23:14:21.489034
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/AS1A13_071T08_9000006114_45624cztM0_level2.fits modeM0/AS1A13_071T08_9000006114_45624cztM0_level2_quad_clean.evt
Size (bytes)745,208,640123,935,040
Size710.7 MB 118.2 MB
Events in quadrant A7,027,185866,435
Events in quadrant B5,463,032809,433
Events in quadrant C3,866,386845,521
Events in quadrant D10,605,613670,383

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0264210
B0218350
C0173880
D0371542

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80602012.493797%
B806082110.186104%
C8060660.818859%
D8060133916.612903%

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 8060 8060 29 29 0.36% 0.36%
B 8060 8060 386 386 4.79% 4.79%
C 8060 8060 48 48 0.60% 0.60%
D 8060 8060 1185 1185 14.70% 14.70%

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 3322323 17545.7 904 884 189.3
A 14 235 64543 336.28 904 884 189.3
A 13 248 52417 272.23 904 884 189.3
B 12 18 1150115 6783.25 869 844 169.4
B 5 172 468625 2760.95 869 844 169.4
B 3 112 98306 575.24 869 844 169.4
C 14 254 283328 1366.06 879 882 206.8
C 3 233 81855 391.63 879 882 206.8
C 2 14 30857 144.98 879 882 206.8
D 11 241 4425842 20964.67 837 808 211.1
D 8 129 1203796 5699.45 837 808 211.1
D 8 48 493461 2334.06 837 808 211.1

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