ASTROSAT CZTI

Data Quality Report

Orbit 20220225_A11_065T06_9000004958_level2

Creation date: 2022-03-01T09:51:25.707517
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1A11_065T06_9000004958cztM0_level2_bc.evt modeM0/AS1A11_065T06_9000004958cztM0_level2_quad_clean.evt
Size (bytes)1,818,109,440407,928,960
Size1.7 GB 389.0 MB
Events in quadrant A11,859,9792,575,969
Events in quadrant B11,647,9722,699,713
Events in quadrant C8,433,1442,693,064
Events in quadrant D21,162,1142,405,421

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0851460
B0815380
C0633780
D01114720

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05880
B05880
C05880
D05880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01310
B01310
C01310
D01310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2879723208.056395%
B2879721957.622322%
C287972510.871619%
D2879726319.136368%

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 40844 28801 45 45 0.11% 0.16%
B 40843 28794 245 245 0.60% 0.85%
C 40843 28795 46 46 0.11% 0.16%
D 40843 28791 351 351 0.86% 1.22%

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 15 169 5359978 15877.64 1567 1547 337.5
A 10 83 176357 517.98 1567 1547 337.5
A 15 174 100298 292.61 1567 1547 337.5
B 5 172 2787541 8974.75 1597 1572 310.4
B 5 255 1220059 3925.25 1597 1572 310.4
B 10 245 446753 1434.11 1597 1572 310.4
C 15 214 1166185 3288.66 1573 1569 354.1
C 0 10 506237 1425.09 1573 1569 354.1
C 14 67 414012 1164.66 1573 1569 354.1
D 8 195 9700188 25055.99 1504 1471 387.1
D 12 233 1305231 3368.18 1504 1471 387.1
D 2 249 970025 2502.19 1504 1471 387.1

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