ASTROSAT CZTI

Data Quality Report

Orbit 20220426_T05_026T01_9000005092_level2

Creation date: 2022-05-10T18:10:51.022490
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/AS1T05_026T01_9000005092cztM0_level2_bc.evt modeM0/AS1T05_026T01_9000005092cztM0_level2_quad_clean.evt
Size (bytes)2,976,402,240896,558,400
Size2.8 GB 855.0 MB
Events in quadrant A23,863,0555,562,256
Events in quadrant B18,635,2285,804,864
Events in quadrant C20,945,1175,892,582
Events in quadrant D22,418,3345,581,645

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012900
B012900
C012900
D012900

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02360
B02360
C02360
D02360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01789710
B01513100
C01491450
D01566160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6289234105.421993%
B6289224683.924187%
C6289210681.698149%
D6289215882.524963%

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 85446 62905 66 66 0.08% 0.10%
B 85445 62891 140 140 0.16% 0.22%
C 85445 62893 160 160 0.19% 0.25%
D 85445 62890 266 266 0.31% 0.42%

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 15 169 10519607 15321.74 3076 3024 686.4
A 10 83 1168642 1698.2 3076 3024 686.4
A 13 6 155234 221.76 3076 3024 686.4
B 5 172 4945226 7794.27 3222 3150 634.1
B 5 200 649209 1018.92 3222 3150 634.1
B 0 189 237055 368.9 3222 3150 634.1
C 0 10 3224360 4352.87 3230 3219 740.0
C 15 214 2615689 3530.35 3230 3219 740.0
C 9 187 1151298 1551.45 3230 3219 740.0
D 1 52 2433561 3234.74 3200 3108 751.4
D 8 195 2191866 2913.07 3200 3108 751.4
D 13 249 904681 1199.92 3200 3108 751.4

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