ASTROSAT CZTI

Data Quality Report

Orbit 34232

Creation date: 2022-01-27T01:57:54.087497
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/AS1T05_003T01_9000004886_34232cztM0_level2.evt modeM0/AS1T05_003T01_9000004886_34232cztM0_level2_quad_clean.evt
Size (bytes)430,444,80064,408,320
Size410.5 MB 61.4 MB
Events in quadrant A2,650,495392,513
Events in quadrant B2,810,935409,759
Events in quadrant C3,380,915393,313
Events in quadrant D3,830,780380,486

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111423
B0116022
C0131552
D0150362

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5345120.224509%
B5345380.710945%
C53451522.843779%
D53451422.656688%

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 7257 5346 6 6 0.08% 0.11%
B 7257 5346 16 16 0.22% 0.30%
C 7257 5346 109 109 1.50% 2.04%
D 7257 5346 126 126 1.74% 2.36%

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 9 143 56110 424.58 648 636 130.7
A 7 16 42211 318.2 648 636 130.7
A 10 83 23448 174.59 648 636 130.7
B 5 172 110054 884.3 658 643 123.7
B 0 189 36793 292.18 658 643 123.7
B 3 112 27022 213.2 658 643 123.7
C 0 10 326111 2188.08 642 648 148.7
C 15 214 231535 1552.25 642 648 148.7
C 14 254 157536 1054.75 642 648 148.7
D 8 195 787003 5118.05 639 623 153.6
D 12 6 355330 2308.56 639 623 153.6
D 2 249 92769 599.72 639 623 153.6

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