ASTROSAT CZTI

Data Quality Report

Orbit 39398

Creation date: 2024-06-27T22:04:04.574495
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/AS1A12_018T01_9000005470_39398cztM0_level2.fits modeM0/AS1A12_018T01_9000005470_39398cztM0_level2_quad_clean.evt
Size (bytes)780,724,800147,735,360
Size744.6 MB 140.9 MB
Events in quadrant A5,783,9211,021,614
Events in quadrant B4,249,7841,064,512
Events in quadrant C5,732,297995,789
Events in quadrant D12,397,102731,086

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01960
B01960
C01960
D01960

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0232133
B0194052
C0232962
D0434202

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A95102362.481598%
B9510220.231335%
C95101841.934805%
D9510245325.793901%

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 12615 9512 163 163 1.29% 1.71%
B 12615 9512 9 9 0.07% 0.09%
C 12615 9512 147 147 1.17% 1.55%
D 12615 9512 2234 2234 17.71% 23.49%

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 13 248 1064803 5073.64 1033 1012 209.7
A 10 83 625095 2976.5 1033 1012 209.7
A 2 79 93463 440.94 1033 1012 209.7
B 5 172 129228 637.15 1039 1009 201.2
B 12 111 26057 124.47 1039 1009 201.2
B 11 111 23990 114.2 1039 1009 201.2
C 9 187 540299 2281.83 1013 1018 236.3
C 14 254 430677 1817.99 1013 1018 236.3
C 15 208 396504 1673.39 1013 1018 236.3
D 12 235 8082148 35828.88 915 888 225.6
D 13 249 501818 2220.91 915 888 225.6
D 2 249 165899 731.59 915 888 225.6

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