ASTROSAT CZTI

Data Quality Report

Orbit 20200603_A07_059T07_9000003704_level2

Creation date: 2021-01-10T21:54:13.635984
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_059T07_9000003704cztM0_level2_bc.evt modeM0/AS1A07_059T07_9000003704cztM0_level2_quad_clean.evt
Size (bytes)875,856,960216,947,520
Size835.3 MB 206.9 MB
Events in quadrant A4,488,1541,400,862
Events in quadrant B5,765,6131,389,167
Events in quadrant C4,291,5181,319,053
Events in quadrant D10,811,0631,281,391

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03500
B03500
C03500
D03500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0520
C0520
D0520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0387010
B0436040
C0388220
D0595680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A171133101.811488%
B171134892.857477%
C171133832.238065%
D1711315168.858762%

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 22293 17112 0 0 0.00% 0.00%
B 22293 17111 25 25 0.11% 0.15%
C 22293 17113 0 0 0.00% 0.00%
D 22293 17111 580 580 2.60% 3.39%

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 59878 246.82 1147 1136 238.0
A 13 254 25212 101.16 1147 1136 238.0
A 0 226 7383 26.25 1147 1136 238.0
B 3 112 1138223 5451.01 1136 1116 208.6
B 3 64 249847 1192.36 1136 1116 208.6
B 15 32 15949 71.11 1136 1116 208.6
C 9 54 133802 542.15 1075 1078 244.8
C 3 233 16745 64.0 1075 1078 244.8
C 7 247 9726 35.33 1075 1078 244.8
D 1 52 4711286 19537.57 1096 1066 241.1
D 8 195 1290612 5348.92 1096 1066 241.1
D 7 238 282854 1168.83 1096 1066 241.1

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