ASTROSAT CZTI

Data Quality Report

Orbit 20191123_A07_065T01_9000003338_level2

Creation date: 2019-11-25T10:11:33.308187
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/AS1A07_065T01_9000003338cztM0_level2_bc.evt modeM0/AS1A07_065T01_9000003338cztM0_level2_quad_clean.evt
Size (bytes)1,712,324,160722,897,280
Size1.6 GB 689.4 MB
Events in quadrant A10,822,6144,676,322
Events in quadrant B13,968,5534,703,230
Events in quadrant C10,890,5014,563,120
Events in quadrant D12,717,3404,475,137

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010340
B010340
C010340
D010340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01062690
B01177870
C01084740
D01125830

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01050
B01050
C01050
D01050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A507044330.853976%
B507048401.656674%
C507048581.692174%
D507048221.621174%

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 61179 50698 0 0 0.00% 0.00%
B 61179 50697 21 21 0.03% 0.04%
C 61179 50697 5 5 0.01% 0.01%
D 61179 50697 113 113 0.18% 0.22%

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 69942 111.5 2788 2743 602.7
A 13 254 68230 108.66 2788 2743 602.7
A 0 226 17684 24.79 2788 2743 602.7
B 0 244 2364167 4529.41 2807 2744 521.4
B 10 245 470808 897.79 2807 2744 521.4
B 5 172 114807 214.95 2807 2744 521.4
C 10 22 299146 468.07 2710 2696 633.3
C 9 54 130160 201.25 2710 2696 633.3
C 0 10 59681 89.97 2710 2696 633.3
D 1 52 1152679 1818.26 2760 2674 632.5
D 13 249 396284 622.33 2760 2674 632.5
D 2 234 215099 335.86 2760 2674 632.5

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