ASTROSAT CZTI

Data Quality Report

Orbit 20161122_A02_151T01_9000000818_level2

Creation date: 2025-11-07T21:43:58.867690
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/AS1A02_151T01_9000000818cztM0_level2.fits modeM0/AS1A02_151T01_9000000818cztM0_level2_quad_clean.evt
Size (bytes)980,320,3201,069,577,280
Size934.9 MB 1020.0 MB
Events in quadrant A5,867,1066,563,308
Events in quadrant B5,670,5166,466,126
Events in quadrant C5,812,8926,250,134
Events in quadrant D4,972,4365,750,541

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021900
B021940
C021920
D021940

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01710
B01730
C01730
D01730

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02246690
B02390310
C02193900
D02555400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10746113001.209741%
B10745026692.483946%
C1074677880.733248%
D10738124352.267626%

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 157954 107704 0 0 0.00% 0.00%
B 157955 107633 0 0 0.00% 0.00%
C 157954 107701 0 0 0.00% 0.00%
D 157955 107578 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 0 29 5721 11.27 1526 1427 380.9
A 7 110 5062 9.54 1526 1427 380.9
A 0 30 4452 7.94 1526 1427 380.9
B 2 9 4866 11.7 1493 1419 294.6
B 12 226 3934 8.54 1493 1419 294.6
B 14 254 3858 8.28 1493 1419 294.6
C 1 80 4267 7.07 1532 1415 403.7
C 1 81 4191 6.88 1532 1415 403.7
C 12 241 4114 6.69 1532 1415 403.7
D 6 231 3812 6.62 1418 1289 380.8
D 3 14 3753 6.47 1418 1289 380.8
D 3 31 3674 6.26 1418 1289 380.8

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