ASTROSAT CZTI

Data Quality Report

Orbit 30627

Creation date: 2024-06-27T20:17:51.044184
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_071T05_9000004412_30627cztM0_level2.evt modeM0/AS1A10_071T05_9000004412_30627cztM0_level2_quad_clean.evt
Size (bytes)586,869,12070,355,520
Size559.7 MB 67.1 MB
Events in quadrant A3,576,136436,900
Events in quadrant B5,225,823435,889
Events in quadrant C3,546,169411,929
Events in quadrant D4,992,388398,677

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145672
B0198802
C0144372
D0195782

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6403741.155708%
B64031191.858504%
C64031472.295799%
D6403651.015149%

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 7613 6404 9 9 0.12% 0.14%
B 7613 6404 0 0 0.00% 0.00%
C 7613 6404 8 8 0.11% 0.12%
D 7613 6404 12 12 0.16% 0.19%

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 1 113 44397 243.12 907 892 178.9
A 0 13 25869 139.58 907 892 178.9
A 13 254 12311 63.81 907 892 178.9
B 6 159 1728694 10360.97 889 871 166.8
B 12 111 20041 114.95 889 871 166.8
B 11 111 18294 104.48 889 871 166.8
C 14 238 151352 769.84 842 849 195.5
C 10 22 44577 223.67 842 849 195.5
C 0 10 34311 171.16 842 849 195.5
D 8 195 1385602 6928.8 854 833 199.9
D 1 52 300852 1501.17 854 833 199.9
D 10 253 27714 134.5 854 833 199.9

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