ASTROSAT CZTI

Data Quality Report

Orbit 20200627_A09_043T01_9000003744_level2

Creation date: 2021-01-10T06:55:04.940153
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_043T01_9000003744cztM0_level2_bc.evt modeM0/AS1A09_043T01_9000003744cztM0_level2_quad_clean.evt
Size (bytes)2,986,297,920985,331,520
Size2.8 GB 939.7 MB
Events in quadrant A19,902,3796,321,776
Events in quadrant B17,016,5986,422,991
Events in quadrant C15,542,8596,034,554
Events in quadrant D32,767,6485,818,421

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015620
B015620
C015620
D015620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01170
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01690830
B01614490
C01591430
D02118190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7652511031.441359%
B765259941.298922%
C7652512381.617772%
D7652522092.886638%

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 93357 76520 36 36 0.04% 0.05%
B 93357 76522 7 7 0.01% 0.01%
C 93357 76522 6 6 0.01% 0.01%
D 93357 76522 520 520 0.56% 0.68%

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 8 192 2905925 3193.69 4179 4106 908.6
A 0 13 839366 919.27 4179 4106 908.6
A 13 254 105747 111.86 4179 4106 908.6
B 3 112 345845 430.66 4225 4124 793.5
B 0 245 218347 269.98 4225 4124 793.5
B 15 33 120014 146.05 4225 4124 793.5
C 3 233 133668 140.36 3970 3953 924.2
C 14 225 124079 129.98 3970 3953 924.2
C 2 16 27327 25.29 3970 3953 924.2
D 1 52 9600412 10371.89 4019 3879 925.2
D 8 195 5147357 5559.05 4019 3879 925.2
D 2 244 931994 1003.1 4019 3879 925.2

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