ASTROSAT CZTI

Data Quality Report

Orbit 20190106_T03_042T01_9000002630_level2

Creation date: 2019-01-09T11:23:41.668864
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1T03_042T01_9000002630cztM0_level2_bc.evt modeM0/AS1T03_042T01_9000002630cztM0_level2_quad_clean.evt
Size (bytes)5,158,771,2001,588,337,280
Size4.8 GB 1.5 GB
Events in quadrant A26,697,19210,333,297
Events in quadrant B25,507,82010,648,954
Events in quadrant C24,818,31610,167,716
Events in quadrant D71,076,5588,773,557

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02567780
B02500710
C02493470
D04515650

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02040
B02040
C02040
D02040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A024340
B024340
C024340
D024340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11939021001.758941%
B11939014691.230421%
C11939017361.454058%
D1193902470220.690175%

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 139720 119390 93 93 0.07% 0.08%
B 139720 119394 22 22 0.02% 0.02%
C 139720 119390 0 0 0.00% 0.00%
D 139720 119377 3751 3751 2.68% 3.14%

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 15 174 2570306 1912.14 6177 6058 1341.0
A 15 31 185119 133.52 6177 6058 1341.0
A 12 16 125954 89.41 6177 6058 1341.0
B 10 245 440068 366.49 6304 6134 1184.0
B 0 219 238321 196.1 6304 6134 1184.0
B 0 189 197669 161.76 6304 6134 1184.0
C 3 233 1098423 779.6 6009 5979 1401.3
C 5 218 462337 325.67 6009 5979 1401.3
C 0 207 78821 51.98 6009 5979 1401.3
D 7 238 46747488 33448.92 5358 5204 1397.4
D 1 52 1175643 837.57 5358 5204 1397.4
D 13 232 805054 572.38 5358 5204 1397.4

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