ASTROSAT CZTI

Data Quality Report

Orbit 20201114_A09_038T43_9000003994_level2

Creation date: 2021-01-07T13:16:28.500917
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_038T43_9000003994cztM0_level2_bc.evt modeM0/AS1A09_038T43_9000003994cztM0_level2_quad_clean.evt
Size (bytes)201,942,720109,350,720
Size192.6 MB 104.3 MB
Events in quadrant A1,169,653737,032
Events in quadrant B1,192,912751,314
Events in quadrant C1,669,775709,165
Events in quadrant D1,672,817701,451

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122070
B0121990
C0139070
D0136980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59081532.589709%
B59081672.826676%
C59082764.671632%
D59081873.165200%

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 6108 5907 0 0 0.00% 0.00%
B 6108 5907 0 0 0.00% 0.00%
C 6108 5908 4 4 0.07% 0.07%
D 6108 5908 1 1 0.02% 0.02%

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 0 13 16990 248.33 295 289 67.3
A 13 254 10380 150.04 295 289 67.3
A 8 192 3299 44.76 295 289 67.3
B 0 229 12582 204.56 298 291 60.1
B 0 230 10730 173.74 298 291 60.1
B 4 200 8715 140.2 298 291 60.1
C 3 233 487606 7001.24 283 280 69.6
C 6 112 83252 1192.03 283 280 69.6
C 15 208 7150 98.7 283 280 69.6
D 1 52 245417 3518.79 290 278 69.7
D 11 176 186078 2667.02 290 278 69.7
D 2 250 60889 870.03 290 278 69.7

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