ASTROSAT CZTI

Data Quality Report

Orbit 11565

Creation date: 2024-06-27T16:15:07.886091
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_112T01_9000001698_11565cztM0_level2.evt modeM0/AS1A04_112T01_9000001698_11565cztM0_level2_quad_clean.evt
Size (bytes)247,904,64021,559,680
Size236.4 MB 20.6 MB
Events in quadrant A2,638,729114,957
Events in quadrant B1,989,393120,433
Events in quadrant C1,262,907122,031
Events in quadrant D1,447,651117,531

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500
B0500
C0500
D0500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A095812
B075701
C052521
D059521

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A246754622.132144%
B246733913.741386%
C24671064.296717%
D24671094.418322%

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 3703 2469 272 272 7.35% 11.02%
B 3703 2469 140 140 3.78% 5.67%
C 3703 2469 0 0 0.00% 0.00%
D 3703 2469 6 6 0.16% 0.24%

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 8 5 1330626 21064.29 305 298 63.2
A 1 162 40601 638.15 305 298 63.2
A 1 178 24888 389.36 305 298 63.2
B 4 239 532883 8651.04 319 311 61.6
B 15 204 108645 1759.77 319 311 61.6
B 15 255 40333 650.11 319 311 61.6
C 13 61 2463 28.78 323 324 74.3
C 3 202 800 6.4 323 324 74.3
C 3 203 707 5.15 323 324 74.3
D 2 120 82593 1059.16 324 313 77.7
D 1 52 77162 989.25 324 313 77.7
D 10 199 16511 208.51 324 313 77.7

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