ASTROSAT CZTI

Data Quality Report

Orbit 28560

Creation date: 2024-06-27T19:53:21.590952
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_102T07_9000004102_28560cztM0_level2.evt modeM0/AS1A10_102T07_9000004102_28560cztM0_level2_quad_clean.evt
Size (bytes)528,367,680109,537,920
Size503.9 MB 104.5 MB
Events in quadrant A3,590,821745,665
Events in quadrant B3,854,376745,577
Events in quadrant C3,380,164691,806
Events in quadrant D4,734,126679,732

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147512
B0155193
C0140392
D0184742

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65161352.071823%
B65151702.609363%
C65151291.980046%
D65151592.440522%

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 7741 6516 24 24 0.31% 0.37%
B 7740 6515 41 41 0.53% 0.63%
C 7740 6515 0 0 0.00% 0.00%
D 7740 6515 132 132 1.71% 2.03%

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 15 174 173396 978.86 884 872 176.3
A 8 192 11013 57.54 884 872 176.3
A 13 254 10985 57.38 884 872 176.3
B 10 245 318041 1936.04 865 847 163.8
B 4 171 92715 560.73 865 847 163.8
B 15 33 22091 129.67 865 847 163.8
C 14 238 133403 690.39 820 826 192.0
C 7 247 40607 207.16 820 826 192.0
C 3 233 9204 43.63 820 826 192.0
D 1 52 782517 3948.12 839 820 198.0
D 8 195 660807 3333.4 839 820 198.0
D 10 199 31317 154.03 839 820 198.0

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