ASTROSAT CZTI

Data Quality Report

Orbit 40481

Creation date: 2024-06-27T22:16:38.819599
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_9000005540_40481cztM0_level2.fits modeM0/AS1A12_022T01_9000005540_40481cztM0_level2_quad_clean.evt
Size (bytes)178,410,24045,550,080
Size170.1 MB 43.4 MB
Events in quadrant A1,375,165308,379
Events in quadrant B1,171,837312,711
Events in quadrant C1,296,363303,968
Events in quadrant D2,531,344245,773

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A061732
B058661
C059681
D095851

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0600
C0600
D0600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A291750.171409%
B291710.034282%
C291730.102845%
D291746515.941035%

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 2917 2917 2 2 0.07% 0.07%
B 2917 2917 0 0 0.00% 0.00%
C 2917 2917 1 1 0.03% 0.03%
D 2917 2917 275 275 9.43% 9.43%

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 253015 4200.91 285 280 60.2
A 9 191 5896 93.35 285 280 60.2
A 12 189 4353 67.7 285 280 60.2
B 4 170 23138 404.4 287 279 56.5
B 3 112 8582 146.89 287 279 56.5
B 5 255 7703 131.34 287 279 56.5
C 15 214 126372 1866.44 285 287 67.6
C 9 187 45614 670.98 285 287 67.6
C 0 10 6827 96.81 285 287 67.6
D 12 227 1205179 18003.73 262 254 66.9
D 12 191 72903 1085.51 262 254 66.9
D 2 250 67581 1005.99 262 254 66.9

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