ASTROSAT CZTI

Data Quality Report

Orbit 39810

Creation date: 2024-06-27T22:09:12.853705
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_022T01_9000005498_39810cztM0_level2.fits modeM0/AS1A12_022T01_9000005498_39810cztM0_level2_quad_clean.evt
Size (bytes)460,408,32086,808,960
Size439.1 MB 82.8 MB
Events in quadrant A3,398,698632,590
Events in quadrant B2,850,398634,042
Events in quadrant C7,589,192458,852
Events in quadrant D2,805,998543,277

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135733
B0117422
C0261292
D0118302

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5129541.052837%
B5129821.598752%
C5129143627.997660%
D51291653.217001%

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 7281 5130 35 35 0.48% 0.68%
B 7281 5130 53 53 0.73% 1.03%
C 7281 5130 1285 1285 17.65% 25.05%
D 7281 5130 113 113 1.55% 2.20%

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 468597 3905.03 593 583 119.8
A 2 79 328864 2739.12 593 583 119.8
A 9 143 189294 1574.57 593 583 119.8
B 5 172 189736 1688.43 584 569 112.0
B 5 32 167544 1490.35 584 569 112.0
B 4 171 111026 985.89 584 569 112.0
C 9 187 4105003 34596.97 513 517 118.6
C 15 208 1245345 10492.73 513 517 118.6
C 15 214 196176 1649.22 513 517 118.6
D 13 249 426696 3062.27 567 550 139.2
D 2 249 88736 633.7 567 550 139.2
D 12 227 44961 319.14 567 550 139.2

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