ASTROSAT CZTI

Data Quality Report

Orbit 20210207_A10_103T04_9000004158_level2

Creation date: 2021-02-12T10:20:59.509674
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/AS1A10_103T04_9000004158cztM0_level2_bc.evt modeM0/AS1A10_103T04_9000004158cztM0_level2_quad_clean.evt
Size (bytes)3,081,332,1601,030,642,560
Size2.9 GB 982.9 MB
Events in quadrant A16,112,7696,771,090
Events in quadrant B18,218,5036,818,060
Events in quadrant C18,362,6016,470,777
Events in quadrant D35,501,6255,997,567

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01568330
B01639420
C01666000
D02232100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015320
B015320
C015320
D015320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A752588031.066996%
B7525812871.710117%
C7525813591.805788%
D7525844835.956842%

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 87212 75256 0 0 0.00% 0.00%
B 87212 75254 13 13 0.01% 0.02%
C 87212 75257 7 7 0.01% 0.01%
D 87212 75252 1144 1144 1.31% 1.52%

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 1 113 173428 191.44 4085 4004 885.0
A 13 254 121814 133.12 4085 4004 885.0
A 12 210 76551 81.97 4085 4004 885.0
B 10 245 1389698 1785.46 4107 4006 776.1
B 10 246 532616 681.11 4107 4006 776.1
B 0 229 227731 288.27 4107 4006 776.1
C 3 233 2999586 3220.95 3924 3910 930.1
C 2 16 149140 156.15 3924 3910 930.1
C 2 114 145300 152.02 3924 3910 930.1
D 1 52 10684897 12130.05 3867 3744 880.6
D 8 195 6676635 7578.06 3867 3744 880.6
D 7 80 1390373 1574.72 3867 3744 880.6

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