ASTROSAT CZTI

Data Quality Report

Orbit 20201019_A09_038T14_9000003930_level2

Creation date: 2021-01-07T17:16:36.803690
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/AS1A09_038T14_9000003930cztM0_level2_bc.evt modeM0/AS1A09_038T14_9000003930cztM0_level2_quad_clean.evt
Size (bytes)204,805,44099,550,080
Size195.3 MB 94.9 MB
Events in quadrant A1,181,650679,181
Events in quadrant B1,218,136686,414
Events in quadrant C1,743,579636,779
Events in quadrant D1,697,705648,707

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107230
B0108750
C0133400
D0121810

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5193180.346620%
B5193240.462161%
C51933516.759099%
D5193220.423647%

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 5192 5192 1 1 0.02% 0.02%
B 5192 5192 1 1 0.02% 0.02%
C 5192 5192 25 25 0.48% 0.48%
D 5192 5192 2 2 0.04% 0.04%

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 23867 360.32 299 295 65.4
A 13 254 8584 126.7 299 295 65.4
A 8 192 4564 65.26 299 295 65.4
B 0 190 21803 364.81 299 294 59.0
B 10 245 16478 274.5 299 294 59.0
B 15 32 11041 182.28 299 294 59.0
C 2 16 671650 10132.72 274 274 66.3
C 15 208 12996 192.01 274 274 66.3
C 7 247 4008 56.36 274 274 66.3
D 10 0 328562 4730.29 289 282 69.4
D 1 52 163413 2350.61 289 282 69.4
D 2 250 51240 734.27 289 282 69.4

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