ASTROSAT CZTI

Data Quality Report

Orbit 20200413_T03_183T01_9000003610_level2

Creation date: 2020-04-27T14:49:25.284173
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_183T01_9000003610cztM0_level2_bc.evt modeM0/AS1T03_183T01_9000003610cztM0_level2_quad_clean.evt
Size (bytes)6,593,676,4802,208,320,640
Size6.1 GB 2.1 GB
Events in quadrant A28,196,85815,345,297
Events in quadrant B29,050,65815,459,439
Events in quadrant C71,889,90313,782,634
Events in quadrant D62,266,14413,939,689

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02595470
B02643300
C03970470
D03652160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A024860
B024860
C024860
D024860

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01990
B01990
C01990
D01990

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12204115821.296286%
B12204122601.851837%
C1220411826914.969559%
D12204145643.739727%

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 141792 122040 149 149 0.11% 0.12%
B 141792 122036 81 81 0.06% 0.07%
C 141792 122033 5932 5932 4.18% 4.86%
D 141792 122040 1109 1109 0.78% 0.91%

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 6 16 1650726 1111.84 6877 6791 1478.6
A 13 254 185636 120.96 6877 6791 1478.6
A 0 226 44177 25.29 6877 6791 1478.6
B 3 64 1934780 1494.13 6892 6745 1290.4
B 0 190 272828 206.2 6892 6745 1290.4
B 7 202 139815 103.12 6892 6745 1290.4
C 7 247 44803558 30547.63 6235 6241 1466.5
C 2 16 1584225 1076.04 6235 6241 1466.5
C 10 9 861923 583.5 6235 6241 1466.5
D 8 195 25216674 16381.74 6574 6370 1538.9
D 12 218 5767306 3743.48 6574 6370 1538.9
D 1 52 3482567 2258.84 6574 6370 1538.9

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