ASTROSAT CZTI

Data Quality Report

Orbit 41218

Creation date: 2024-06-27T22:26:05.699130
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/AS1C07_001T12_9000005632_41218cztM0_level2.fits modeM0/AS1C07_001T12_9000005632_41218cztM0_level2_quad_clean.evt
Size (bytes)325,560,96090,383,040
Size310.5 MB 86.2 MB
Events in quadrant A3,042,113606,101
Events in quadrant B2,912,653612,548
Events in quadrant C2,663,266585,678
Events in quadrant D2,998,177541,860

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125053
B0127602
C0116202
D0128762

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5583200.358230%
B5583400.716461%
C5583360.644815%
D5583681.217983%

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 7046 5584 15 15 0.21% 0.27%
B 7046 5584 22 22 0.31% 0.39%
C 7046 5584 33 33 0.47% 0.59%
D 7046 5584 61 61 0.87% 1.09%

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 551877 4549.09 588 575 121.2
A 0 8 130630 1073.15 588 575 121.2
A 7 3 60407 493.71 588 575 121.2
B 0 186 405541 3585.38 583 568 113.0
B 0 245 169785 1498.14 583 568 113.0
B 5 185 14334 121.88 583 568 113.0
C 15 214 240709 1818.32 572 574 132.1
C 0 10 119851 903.17 572 574 132.1
C 3 233 50509 378.11 572 574 132.1
D 5 222 247196 1773.78 572 555 139.0
D 2 249 201217 1443.11 572 555 139.0
D 13 249 112916 808.07 572 555 139.0

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