ASTROSAT CZTI

Data Quality Report

Orbit 08577

Creation date: 2024-06-27T15:34:31.325455
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/AS1A03_102T01_9000001202_08577cztM0_level2.evt modeM0/AS1A03_102T01_9000001202_08577cztM0_level2_quad_clean.evt
Size (bytes)1,147,688,640278,208,000
Size1.1 GB 265.3 MB
Events in quadrant A8,465,1371,810,115
Events in quadrant B8,770,0761,851,856
Events in quadrant C7,557,2661,811,049
Events in quadrant D8,781,8151,748,247

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03580
B03580
C03580
D03580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0376124
B0376373
C0354383
D0384683

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A174812511.435845%
B174812151.229907%
C174811300.743665%
D174812711.550255%

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 19461 17482 62 62 0.32% 0.35%
B 19461 17481 29 29 0.15% 0.17%
C 19461 17481 0 0 0.00% 0.00%
D 19461 17481 112 112 0.58% 0.64%

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 15 223 281291 702.31 1975 1936 397.8
A 15 236 201574 501.9 1975 1936 397.8
A 15 239 129582 320.91 1975 1936 397.8
B 11 51 338816 889.58 1994 1944 378.7
B 0 214 271059 710.66 1994 1944 378.7
B 10 16 100267 259.64 1994 1944 378.7
C 13 61 14689 28.55 1935 1940 446.6
C 8 222 7955 13.47 1935 1940 446.6
C 9 68 5455 7.87 1935 1940 446.6
D 1 52 502818 1023.83 1917 1867 489.3
D 12 233 451357 918.66 1917 1867 489.3
D 7 71 149816 302.37 1917 1867 489.3

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