ASTROSAT CZTI

Data Quality Report

Orbit 28485

Creation date: 2024-06-27T19:52:17.284219
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/AS1A10_110T04_9000004094_28485cztM0_level2.evt modeM0/AS1A10_110T04_9000004094_28485cztM0_level2_quad_clean.evt
Size (bytes)692,680,32068,264,640
Size660.6 MB 65.1 MB
Events in quadrant A3,938,336417,644
Events in quadrant B6,322,724402,575
Events in quadrant C3,669,097407,445
Events in quadrant D6,613,294390,259

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161802
B0231682
C0151982
D0242032

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64361732.688005%
B643688813.797390%
C64361271.973275%
D643682812.865134%

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 7711 6436 65 65 0.84% 1.01%
B 7711 6436 555 555 7.20% 8.62%
C 7711 6436 0 0 0.00% 0.00%
D 7710 6435 783 783 10.16% 12.17%

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 15 174 429139 2406.96 907 894 177.9
A 13 254 11083 57.27 907 894 177.9
A 3 137 8129 40.66 907 894 177.9
B 10 245 2275670 14232.28 860 842 159.8
B 10 246 653564 4083.7 860 842 159.8
B 12 111 18417 109.96 860 842 159.8
C 14 238 145656 711.26 884 893 203.5
C 7 247 59439 287.65 884 893 203.5
C 3 233 21470 101.1 884 893 203.5
D 8 195 2136521 10332.37 868 847 206.7
D 1 52 873085 4219.88 868 847 206.7
D 12 233 153221 737.18 868 847 206.7

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