ASTROSAT CZTI

Data Quality Report

Orbit 31524

Creation date: 2024-06-27T20:29:32.702357
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_053T39_9000004596_31524cztM0_level2.evt modeM0/AS1A10_053T39_9000004596_31524cztM0_level2_quad_clean.evt
Size (bytes)484,588,80059,973,120
Size462.1 MB 57.2 MB
Events in quadrant A3,823,991351,945
Events in quadrant B3,317,511410,069
Events in quadrant C3,507,124387,523
Events in quadrant D3,746,620373,995

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0860
B0860
C0860
D0860

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141111
B0128259
C0132001
D0140288

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A414174517.990823%
B4138761.836636%
C41403518.478261%
D41392375.726021%

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 5291 4141 538 538 10.17% 12.99%
B 5290 4140 1 1 0.02% 0.02%
C 5290 4140 52 52 0.98% 1.26%
D 5290 4140 182 182 3.44% 4.40%

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 0 13 1935933 19595.8 489 480 98.8
A 13 254 7046 66.48 489 480 98.8
A 3 137 4762 43.35 489 480 98.8
B 6 159 1140060 11148.42 527 513 102.2
B 4 80 55699 539.9 527 513 102.2
B 0 190 29486 283.45 527 513 102.2
C 3 233 1419591 11821.93 508 513 120.0
C 14 238 80586 667.07 508 513 120.0
C 2 114 9667 76.26 508 513 120.0
D 8 195 883345 7355.81 508 494 120.0
D 11 176 806714 6717.33 508 494 120.0
D 12 233 38992 320.76 508 494 120.0

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