ASTROSAT CZTI

Data Quality Report

Orbit 31918

Creation date: 2024-06-27T20:34:10.964225
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_123T09_9000004654_31918cztM0_level2.evt modeM0/AS1A10_123T09_9000004654_31918cztM0_level2_quad_clean.evt
Size (bytes)1,000,474,560103,728,960
Size954.1 MB 98.9 MB
Events in quadrant A3,414,045838,860
Events in quadrant B6,747,526758,792
Events in quadrant C5,019,474757,792
Events in quadrant D14,687,774336,897

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140081
B0241821
C0196781
D0479778

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63961151.797999%
B639781812.787244%
C63972794.361419%
D6396523081.769856%

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 7671 6397 0 0 0.00% 0.00%
B 7672 6398 549 549 7.16% 8.58%
C 7672 6398 53 53 0.69% 0.83%
D 7671 6397 5103 5103 66.52% 79.77%

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 6 17214 95.29 880 868 171.5
A 13 254 13207 71.93 880 868 171.5
A 0 226 7684 39.73 880 868 171.5
B 6 159 1697152 11368.09 813 797 149.2
B 5 172 737693 4938.29 813 797 149.2
B 12 18 657178 4398.72 813 797 149.2
C 3 233 1335284 7164.49 814 818 186.3
C 0 10 321094 1719.5 814 818 186.3
C 14 238 134612 718.31 814 818 186.3
D 12 33 11803095 113188.64 443 434 104.3
D 8 195 844105 8090.89 443 434 104.3
D 12 233 196798 1883.15 443 434 104.3

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