ASTROSAT CZTI

Data Quality Report

Orbit 48098

Creation date: 2024-08-20T13:51:31.855222
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/AS1A13_071T03_9000006400_48098cztM0_level2.fits modeM0/AS1A13_071T03_9000006400_48098cztM0_level2_quad_clean.evt
Size (bytes)256,032,00053,838,720
Size244.2 MB 51.3 MB
Events in quadrant A4,354,847456,625
Events in quadrant B709,95426,427
Events in quadrant C1,817,254449,995
Events in quadrant D2,274,119409,317

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157141
B043421
C083601
D096352

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0820
B0820
C0820
D0820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A40552425.967941%
B40554055100.000000%
C4055180.443896%
D4054681.677356%

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 5230 4055 59 59 1.13% 1.45%
B 5229 4054 1 1 0.02% 0.02%
C 5230 4056 1 1 0.02% 0.02%
D 5229 4055 41 41 0.78% 1.01%

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 2560276 26180.31 461 451 97.8
A 13 254 8160 78.84 461 451 97.8
A 9 224 5860 55.32 461 451 97.8
B 2 177 559306 67995.94 30 29 8.2
B 4 21 17385 2110.11 30 29 8.2
B 0 200 7096 859.19 30 29 8.2
C 3 233 10886 96.06 458 461 108.5
C 10 20 6616 56.71 458 461 108.5
C 12 2 4962 41.47 458 461 108.5
D 2 165 245542 2119.4 453 437 115.6
D 12 2 114086 982.71 453 437 115.6
D 11 224 52468 449.91 453 437 115.6

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