ASTROSAT CZTI

Data Quality Report

Orbit 38742

Creation date: 2024-06-27T21:55:51.878323
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_054T01_9000005392_38742cztM0_level2.fits modeM0/AS1A12_054T01_9000005392_38742cztM0_level2_quad_clean.evt
Size (bytes)382,150,08093,539,520
Size364.4 MB 89.2 MB
Events in quadrant A2,974,869633,452
Events in quadrant B3,304,304638,310
Events in quadrant C2,870,026607,326
Events in quadrant D4,553,707554,776

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121533
B0135732
C0119482
D0175422

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5698140.245700%
B5698791.386451%
C5698340.596701%
D56981412.474552%

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 7041 5699 8 8 0.11% 0.14%
B 7041 5699 41 41 0.58% 0.72%
C 7041 5699 31 31 0.44% 0.54%
D 7041 5699 109 109 1.55% 1.91%

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 10 83 424242 3242.92 641 628 130.6
A 15 223 45789 345.72 641 628 130.6
A 9 143 11901 86.3 641 628 130.6
B 4 171 343574 2761.74 634 617 124.2
B 5 184 237786 1909.85 634 617 124.2
B 0 189 120706 967.04 634 617 124.2
C 15 214 253006 1728.1 622 624 146.0
C 0 10 99770 678.87 622 624 146.0
C 14 254 47940 323.98 622 624 146.0
D 12 235 1105604 7273.79 616 598 151.9
D 2 16 384622 2527.87 616 598 151.9
D 12 227 178917 1173.8 616 598 151.9

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