ASTROSAT CZTI

Data Quality Report

Orbit 18373

Creation date: 2024-06-27T17:49:00.084293
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/AS1A06_006T01_9000002724_18373cztM0_level2.evt modeM0/AS1A06_006T01_9000002724_18373cztM0_level2_quad_clean.evt
Size (bytes)536,397,12098,677,440
Size511.5 MB 94.1 MB
Events in quadrant A3,598,051625,348
Events in quadrant B3,829,920631,813
Events in quadrant C3,860,632618,338
Events in quadrant D4,455,374599,420

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154461
B0159831
C0160831
D0181221

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73731211.641123%
B73731241.681812%
C73731672.265021%
D73733674.977621%

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 7643 7374 15 15 0.20% 0.20%
B 7643 7374 13 13 0.17% 0.18%
C 7643 7374 18 18 0.24% 0.24%
D 7643 7374 246 246 3.22% 3.34%

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 4 2 70529 378.47 903 882 184.0
A 15 174 41926 223.04 903 882 184.0
A 0 226 8130 39.39 903 882 184.0
B 3 64 101624 578.42 900 875 174.2
B 10 245 89080 506.4 900 875 174.2
B 0 189 35792 200.47 900 875 174.2
C 0 207 321320 1568.05 864 867 204.4
C 14 238 131161 637.56 864 867 204.4
C 3 233 25486 120.47 864 867 204.4
D 1 52 622265 2912.79 872 845 213.3
D 7 238 177808 829.48 872 845 213.3
D 14 34 135284 630.16 872 845 213.3

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