ASTROSAT CZTI

Data Quality Report

Orbit 47266

Creation date: 2024-06-27T23:34:01.309632
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/AS1C09_008T04_9000006308_47266cztM0_level2.fits modeM0/AS1C09_008T04_9000006308_47266cztM0_level2_quad_clean.evt
Size (bytes)352,157,76060,580,800
Size335.8 MB 57.8 MB
Events in quadrant A4,803,459339,653
Events in quadrant B2,289,047457,518
Events in quadrant C2,127,305431,786
Events in quadrant D3,475,442296,217

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03788520690
B02052310567
C0191349396
D03394920783

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B021
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018894
B018482
C018277
D018385

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A396352213.171840%
B46981573.341848%
C47141162.460755%
D401059514.837905%

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 9806 4771 277 277 2.82% 5.81%
B 9813 5448 9 9 0.09% 0.17%
C 9817 5517 4 4 0.04% 0.07%
D 9817 4783 316 316 3.22% 6.61%

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 1928373 21055.68 432 422 91.6
A 9 191 1158185 12644.25 432 422 91.6
A 13 248 39289 424.48 432 422 91.6
B 0 200 78511 724.85 532 514 107.6
B 0 198 27171 247.73 532 514 107.6
B 5 172 17465 157.53 532 514 107.6
C 14 254 48654 382.49 527 528 125.8
C 12 250 11374 86.2 527 528 125.8
C 10 9 8654 64.58 527 528 125.8
D 6 112 1354689 12310.1 431 417 110.0
D 2 249 215152 1951.9 431 417 110.0
D 12 233 165731 1502.68 431 417 110.0

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