ASTROSAT CZTI

Data Quality Report

Orbit 21262

Creation date: 2024-06-27T18:25:35.140839
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/AS1A05_037T01_9000003140_21262cztM0_level2.evt modeM0/AS1A05_037T01_9000003140_21262cztM0_level2_quad_clean.evt
Size (bytes)583,767,360122,071,680
Size556.7 MB 116.4 MB
Events in quadrant A3,799,479838,810
Events in quadrant B3,798,513842,745
Events in quadrant C3,513,415803,285
Events in quadrant D6,124,031755,163

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0250
C0250
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155432
B0156232
C0146702
D0226866

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65581542.348277%
B65581281.951815%
C65581241.890820%
D655770710.782370%

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 7853 6558 7 7 0.09% 0.11%
B 7853 6558 34 34 0.43% 0.52%
C 7853 6558 0 0 0.00% 0.00%
D 7851 6556 509 509 6.48% 7.76%

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 15 236 177281 956.22 923 906 184.5
A 9 143 34205 180.53 923 906 184.5
A 13 252 19232 99.35 923 906 184.5
B 3 64 128385 747.13 903 883 170.7
B 4 216 32442 184.93 903 883 170.7
B 0 197 31377 178.69 903 883 170.7
C 14 238 140656 708.81 863 870 197.2
C 13 61 6178 26.92 863 870 197.2
C 0 10 5193 21.92 863 870 197.2
D 1 52 1070344 5117.12 869 849 209.0
D 13 174 959833 4588.37 869 849 209.0
D 12 233 314496 1500.68 869 849 209.0

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