ASTROSAT CZTI

Data Quality Report

Orbit 35753

Creation date: 2024-06-27T21:17:38.882751
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/AS1A09_142T06_9000005132_35753cztM0_level2.evt modeM0/AS1A09_142T06_9000005132_35753cztM0_level2_quad_clean.evt
Size (bytes)159,505,92037,347,840
Size152.1 MB 35.6 MB
Events in quadrant A1,121,891253,456
Events in quadrant B1,052,730258,147
Events in quadrant C1,162,532244,885
Events in quadrant D1,364,661238,320

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A045092
B042931
C045381
D052841

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1859673.604088%
B185970.376547%
C1859723.873050%
D1859894.787520%

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 3860 1859 58 58 1.50% 3.12%
B 3861 1860 1 1 0.03% 0.05%
C 3861 1860 64 64 1.66% 3.44%
D 3861 1860 86 86 2.23% 4.62%

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 8 192 118113 2379.38 241 236 49.5
A 10 83 65550 1318.38 241 236 49.5
A 13 6 4820 92.53 241 236 49.5
B 5 172 30046 632.21 238 232 47.2
B 0 189 27727 583.04 238 232 47.2
B 0 197 23492 493.23 238 232 47.2
C 0 10 178418 3309.13 229 231 53.8
C 15 214 79782 1477.35 229 231 53.8
C 2 16 5039 89.29 229 231 53.8
D 14 52 287403 4984.37 232 226 57.6
D 13 249 46700 806.62 232 226 57.6
D 13 13 38538 664.96 232 226 57.6

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