ASTROSAT CZTI

Data Quality Report

Orbit 31951

Creation date: 2024-06-27T20:34:29.803611
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/AS1C06_002T04_9000004660_31951cztM0_level2.evt modeM0/AS1C06_002T04_9000004660_31951cztM0_level2_quad_clean.evt
Size (bytes)1,390,933,440175,328,640
Size1.3 GB 167.2 MB
Events in quadrant A5,537,2801,238,298
Events in quadrant B16,456,3991,014,490
Events in quadrant C9,491,5451,127,594
Events in quadrant D9,845,1811,111,488

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02420
B02420
C02420
D02420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0243482
B0569752
C0361922
D0370092

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11793770.652930%
B11793426936.199440%
C1179311779.980497%
D1179410218.656944%

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 12578 11794 0 0 0.00% 0.00%
B 12578 11793 3127 3127 24.86% 26.52%
C 12578 11794 194 194 1.54% 1.64%
D 12579 11794 762 762 6.06% 6.46%

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 13 254 24306 80.86 1424 1393 283.4
A 13 6 22077 73.0 1424 1393 283.4
A 12 96 15753 50.68 1424 1393 283.4
B 4 80 7601573 33996.26 1190 1158 223.6
B 6 159 2997923 13404.38 1190 1158 223.6
B 5 172 608542 2716.8 1190 1158 223.6
C 3 233 3294070 10662.37 1325 1329 308.8
C 0 10 542303 1751.75 1325 1329 308.8
C 14 238 302491 975.21 1325 1329 308.8
D 8 195 1967487 6156.82 1349 1313 319.3
D 12 33 1078926 3374.41 1349 1313 319.3
D 13 249 696805 2177.84 1349 1313 319.3

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