ASTROSAT CZTI

Data Quality Report

Orbit 20160627_G05_241T04_9000000518_level2

Creation date: 2025-10-31T04:01:14.215530
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/AS1G05_241T04_9000000518cztM0_level2.fits modeM0/AS1G05_241T04_9000000518cztM0_level2_quad_clean.evt
Size (bytes)1,055,721,6001,062,512,640
Size1006.8 MB 1013.3 MB
Events in quadrant A6,265,3746,284,131
Events in quadrant B6,127,7626,369,848
Events in quadrant C6,272,4066,057,678
Events in quadrant D5,394,1665,557,522

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A023420
B023400
C023420
D023420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02594460
B02495210
C02372800
D02606520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01940
B01940
C01940
D01940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11546233602.910048%
B11546919541.692229%
C1154609810.849645%
D11547825062.170110%

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 134515 115323 0 0 0.00% 0.00%
B 134515 115510 0 0 0.00% 0.00%
C 134515 115514 0 0 0.00% 0.00%
D 134515 115490 0 0 0.00% 0.00%

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 14 188 6041 10.8 1627 1515 419.2
A 0 29 6036 10.79 1627 1515 419.2
A 14 204 5398 9.26 1627 1515 419.2
B 2 9 5375 11.69 1620 1536 328.4
B 12 226 4433 8.82 1620 1536 328.4
B 14 254 4231 8.21 1620 1536 328.4
C 1 80 4506 6.72 1655 1527 443.1
C 12 241 4487 6.68 1655 1527 443.1
C 1 81 4337 6.34 1655 1527 443.1
D 11 82 4555 7.64 1536 1391 414.1
D 3 14 4035 6.38 1536 1391 414.1
D 6 83 3939 6.15 1536 1391 414.1

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