ASTROSAT CZTI

Data Quality Report

Orbit 19438

Creation date: 2024-06-27T18:02:54.554530
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/AS1A05_221T01_9000002888_19438cztM0_level2.evt modeM0/AS1A05_221T01_9000002888_19438cztM0_level2_quad_clean.evt
Size (bytes)598,253,76083,171,520
Size570.5 MB 79.3 MB
Events in quadrant A3,612,203528,201
Events in quadrant B3,696,619533,006
Events in quadrant C3,682,820505,430
Events in quadrant D6,679,023490,857

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147492
B0149602
C0149402
D0244032

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6612761.149425%
B6612901.361162%
C66121121.693890%
D6612100115.139141%

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 7877 6612 0 0 0.00% 0.00%
B 7877 6612 1 1 0.01% 0.02%
C 7877 6612 7 7 0.09% 0.11%
D 7877 6612 861 861 10.93% 13.02%

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 25416 132.81 927 910 184.5
A 11 29 20992 108.83 927 910 184.5
A 13 254 10101 49.81 927 910 184.5
B 0 214 26636 152.93 906 887 168.4
B 0 198 23774 135.94 906 887 168.4
B 7 220 23582 134.8 906 887 168.4
C 14 238 138636 688.88 870 877 200.0
C 9 221 82554 408.44 870 877 200.0
C 0 207 66204 326.68 870 877 200.0
D 7 238 3336446 16163.01 852 829 206.4
D 1 52 51831 247.13 852 829 206.4
D 12 218 46899 223.24 852 829 206.4

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