ASTROSAT CZTI

Data Quality Report

Orbit 37924

Creation date: 2024-06-27T21:46:11.160756
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_059T01_9000005354_37924cztM0_level2.evt modeM0/AS1T05_059T01_9000005354_37924cztM0_level2_quad_clean.evt
Size (bytes)420,120,00067,749,120
Size400.7 MB 64.6 MB
Events in quadrant A2,966,135426,320
Events in quadrant B3,321,655429,550
Events in quadrant C2,962,729425,241
Events in quadrant D3,101,597387,862

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119153
B0132832
C0119342
D0127042

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5462160.292933%
B5462741.354815%
C5462551.006957%
D5462781.428048%

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 9138 5464 4 4 0.04% 0.07%
B 9138 5464 41 41 0.45% 0.75%
C 9138 5464 40 40 0.44% 0.73%
D 9138 5464 69 69 0.76% 1.26%

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 372665 2810.58 659 648 132.4
A 12 189 24202 177.95 659 648 132.4
A 13 6 11852 84.65 659 648 132.4
B 5 172 280782 2262.86 650 633 123.8
B 0 229 205727 1656.62 650 633 123.8
B 0 213 103017 826.99 650 633 123.8
C 15 214 232511 1580.45 642 647 146.7
C 0 10 155540 1055.79 642 647 146.7
C 14 254 51719 348.12 642 647 146.7
D 12 217 236862 1532.67 640 624 154.1
D 12 233 82940 534.05 640 624 154.1
D 2 250 69907 449.5 640 624 154.1

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