ASTROSAT CZTI

Data Quality Report

Orbit 20200611_A09_085T02_9000003716_level2

Creation date: 2021-01-10T16:23:26.798137
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_085T02_9000003716cztM0_level2_bc.evt modeM0/AS1A09_085T02_9000003716cztM0_level2_quad_clean.evt
Size (bytes)7,908,223,6802,841,131,520
Size7.4 GB 2.6 GB
Events in quadrant A48,904,29318,619,922
Events in quadrant B44,465,66418,699,315
Events in quadrant C47,231,50017,917,431
Events in quadrant D85,248,81317,080,066

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03280
B03280
C03280
D03280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04372760
B04234390
C04429050
D05768380

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040880
B040880
C040880
D040880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A20063320261.009804%
B20063324241.208176%
C20063345882.286762%
D200633135716.764092%

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 233418 200642 28 28 0.01% 0.01%
B 233418 200631 3 3 0.00% 0.00%
C 233418 200637 47 47 0.02% 0.02%
D 233418 200630 2011 2011 0.86% 1.00%

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 5113328 2099.35 11336 11162 2430.4
A 13 254 285488 112.87 11336 11162 2430.4
A 0 226 73389 25.6 11336 11162 2430.4
B 0 190 306788 139.87 11284 11038 2114.5
B 3 112 295314 134.44 11284 11038 2114.5
B 0 245 260498 117.98 11284 11038 2114.5
C 9 54 3951232 1576.3 10763 10742 2499.8
C 2 16 1014394 401.49 10763 10742 2499.8
C 7 87 720567 283.95 10763 10742 2499.8
D 1 52 19228113 7815.08 10781 10435 2459.1
D 7 238 13526809 5496.58 10781 10435 2459.1
D 8 195 5859034 2378.4 10781 10435 2459.1

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