ASTROSAT CZTI

Data Quality Report

Orbit 24937

Creation date: 2024-06-27T19:11:39.585786
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/AS1T03_200T01_9000003654_24937cztM0_level2.evt modeM0/AS1T03_200T01_9000003654_24937cztM0_level2_quad_clean.evt
Size (bytes)255,588,48076,086,720
Size243.7 MB 72.6 MB
Events in quadrant A1,794,224515,857
Events in quadrant B1,984,112526,953
Events in quadrant C1,849,974506,763
Events in quadrant D1,860,284494,091

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0760
B0760
C0760
D0760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A076821
B083021
C079161
D080851

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3682130.353069%
B3682671.819663%
C3682330.896252%
D3682110.298751%

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 4852 3683 0 0 0.00% 0.00%
B 4852 3683 31 31 0.64% 0.84%
C 4852 3683 2 2 0.04% 0.05%
D 4852 3683 3 3 0.06% 0.08%

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 13 254 5154 49.96 464 455 94.1
A 3 137 4164 39.43 464 455 94.1
A 0 226 4019 37.89 464 455 94.1
B 3 64 125007 1416.55 462 450 87.9
B 10 251 12857 141.1 462 450 87.9
B 7 202 12332 135.13 462 450 87.9
C 14 238 71308 678.62 446 449 104.4
C 2 16 23884 224.44 446 449 104.4
C 0 10 8412 76.26 446 449 104.4
D 1 52 86179 782.94 450 437 109.5
D 2 244 45140 408.2 450 437 109.5
D 8 195 27901 250.78 450 437 109.5

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