ASTROSAT CZTI

Data Quality Report

Orbit 03694

Creation date: 2024-06-27T14:32:31.534834
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/AS1G05_009T01_9000000482_03694cztM0_level2.evt modeM0/AS1G05_009T01_9000000482_03694cztM0_level2_quad_clean.evt
Size (bytes)506,854,08074,459,520
Size483.4 MB 71.0 MB
Events in quadrant A4,644,781432,025
Events in quadrant B4,186,718458,262
Events in quadrant C3,020,682459,722
Events in quadrant D3,053,304447,738

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180712
B0169781
C0136621
D0139801

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65515658.624637%
B65511582.411846%
C65511021.557014%
D65511291.969165%

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 7011 6552 399 399 5.69% 6.09%
B 7011 6552 24 24 0.34% 0.37%
C 7011 6552 6 6 0.09% 0.09%
D 7011 6552 19 19 0.27% 0.29%

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 13 251 1358729 8727.6 749 731 155.6
A 13 164 188131 1204.38 749 731 155.6
A 0 118 96204 613.59 749 731 155.6
B 5 70 389516 2536.95 782 764 153.2
B 15 204 352578 2295.9 782 764 153.2
B 14 167 180717 1174.35 782 764 153.2
C 9 247 47797 261.22 760 761 180.1
C 13 61 6455 31.62 760 761 180.1
C 5 223 2677 10.64 760 761 180.1
D 5 233 91334 486.42 758 735 186.3
D 13 239 47679 252.04 758 735 186.3
D 13 223 19462 100.54 758 735 186.3

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
Veto Counter