ASTROSAT CZTI

Data Quality Report

Orbit 15462

Creation date: 2024-06-27T17:08:51.917523
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/AS1A04_203T01_9000002284_15462cztM0_level2.evt modeM0/AS1A04_203T01_9000002284_15462cztM0_level2_quad_clean.evt
Size (bytes)479,658,24087,975,360
Size457.4 MB 83.9 MB
Events in quadrant A3,387,696548,546
Events in quadrant B3,505,176555,930
Events in quadrant C3,472,658543,350
Events in quadrant D3,684,513527,696

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146182
B0149151
C0146831
D0157171

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7015410.584462%
B7015360.513186%
C7015330.470421%
D7015520.741269%

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 7511 7017 10 10 0.13% 0.14%
B 7511 7017 2 2 0.03% 0.03%
C 7511 7017 1 1 0.01% 0.01%
D 7511 7017 32 32 0.43% 0.46%

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 7 16 43079 241.51 855 834 174.9
A 14 238 33758 188.22 855 834 174.9
A 9 143 13169 70.52 855 834 174.9
B 0 189 36847 220.38 855 834 163.4
B 4 216 32133 191.53 855 834 163.4
B 3 209 22876 134.89 855 834 163.4
C 3 233 206449 1061.34 831 836 193.7
C 10 22 9004 42.16 831 836 193.7
C 0 207 7341 33.58 831 836 193.7
D 5 222 145657 705.46 835 813 205.3
D 2 33 138693 671.55 835 813 205.3
D 1 52 129156 625.1 835 813 205.3

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