ASTROSAT CZTI

Data Quality Report

Orbit 20210414_A10_071T05_9000004308_level2

Creation date: 2021-04-17T12:09:20.158064
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/AS1A10_071T05_9000004308cztM0_level2_bc.evt modeM0/AS1A10_071T05_9000004308cztM0_level2_quad_clean.evt
Size (bytes)2,613,605,760707,109,120
Size2.4 GB 674.4 MB
Events in quadrant A12,241,0314,613,341
Events in quadrant B26,370,2574,583,421
Events in quadrant C11,712,2624,394,158
Events in quadrant D25,202,9374,166,991

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01135030
B01623920
C01134920
D01581760

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010900
B010900
C010900
D010900

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A533246221.166454%
B5332410611.989723%
C533249341.751557%
D5332443068.075163%

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 63730 53326 1 1 0.00% 0.00%
B 63730 53324 4 4 0.01% 0.01%
C 63730 53325 1 1 0.00% 0.00%
D 63730 53322 1208 1208 1.90% 2.27%

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 3 1 140422 211.74 3078 3027 648.9
A 8 192 120490 181.02 3078 3027 648.9
A 12 96 114935 172.46 3078 3027 648.9
B 6 159 14283154 24964.78 3070 3007 572.0
B 6 36 150381 257.64 3070 3007 572.0
B 0 183 70358 117.74 3070 3007 572.0
C 3 233 357204 522.26 2918 2916 678.4
C 2 114 100936 144.49 2918 2916 678.4
C 10 22 38975 53.16 2918 2916 678.4
D 7 80 12596248 18350.96 2880 2809 686.3
D 8 195 894521 1299.39 2880 2809 686.3
D 2 250 354482 512.45 2880 2809 686.3

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