ASTROSAT CZTI

Data Quality Report

Orbit 20200412_T03_187T01_9000003608_level2

Creation date: 2020-04-27T18:24:42.383617
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/AS1T03_187T01_9000003608cztM0_level2_bc.evt modeM0/AS1T03_187T01_9000003608cztM0_level2_quad_clean.evt
Size (bytes)2,785,469,7601,025,314,560
Size2.6 GB 977.8 MB
Events in quadrant A13,287,3756,964,829
Events in quadrant B14,038,2226,998,021
Events in quadrant C13,658,3436,583,797
Events in quadrant D39,207,1656,309,651

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013340
B013340
C013340
D013340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01267450
B01302220
C01303380
D02102680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A609645690.933338%
B609659221.512343%
C6096510121.659969%
D6096542446.961371%

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 75254 60968 32 32 0.04% 0.05%
B 75255 60965 28 28 0.04% 0.05%
C 75255 60966 31 31 0.04% 0.05%
D 75255 60966 1263 1263 1.68% 2.07%

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 199504 266.47 3379 3325 736.2
A 13 254 92129 120.62 3379 3325 736.2
A 10 255 49422 62.61 3379 3325 736.2
B 3 64 899680 1414.63 3366 3293 633.7
B 0 190 109387 167.43 3366 3293 633.7
B 7 202 51523 76.11 3366 3293 633.7
C 2 16 1137464 1517.88 3168 3158 747.3
C 5 112 192834 253.82 3168 3158 747.3
C 3 233 77166 99.03 3168 3158 747.3
D 8 195 18408588 24344.35 3194 3088 756.0
D 1 52 4737643 6262.24 3194 3088 756.0
D 12 218 1718809 2269.33 3194 3088 756.0

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