ASTROSAT CZTI

Data Quality Report

Orbit 42087

Creation date: 2024-06-27T22:36:40.835826
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_044T22_9000005740_42087cztM0_level2.fits modeM0/AS1A12_044T22_9000005740_42087cztM0_level2_quad_clean.evt
Size (bytes)359,795,52093,096,000
Size343.1 MB 88.8 MB
Events in quadrant A3,755,405621,241
Events in quadrant B2,504,548644,896
Events in quadrant C2,689,662614,943
Events in quadrant D3,916,832531,666

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149672
B0116462
C0116842
D0158392

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5804240.413508%
B580470.120606%
C580430.051688%
D58044147.133012%

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 7327 5805 13 13 0.18% 0.22%
B 7327 5805 1 1 0.01% 0.02%
C 7327 5805 0 0 0.00% 0.00%
D 7327 5805 353 353 4.82% 6.08%

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 15 222 717506 5449.36 637 623 131.6
A 10 83 556205 4223.24 637 623 131.6
A 13 6 13899 100.92 637 623 131.6
B 12 111 16069 124.39 634 617 124.2
B 11 111 14933 115.25 634 617 124.2
B 14 111 14523 111.95 634 617 124.2
C 15 214 242023 1641.25 624 629 147.1
C 1 16 6142 37.48 624 629 147.1
C 8 79 6003 36.54 624 629 147.1
D 13 249 958953 6481.6 603 586 147.9
D 12 6 424371 2866.13 603 586 147.9
D 5 223 65986 442.31 603 586 147.9

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