ASTROSAT CZTI

Data Quality Report

Orbit 12625

Creation date: 2024-06-27T16:30:10.020555
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/AS1G08_071T01_9000001874_12625cztM0_level2.evt modeM0/AS1G08_071T01_9000001874_12625cztM0_level2_quad_clean.evt
Size (bytes)185,892,48043,398,720
Size177.3 MB 41.4 MB
Events in quadrant A1,136,087283,865
Events in quadrant B1,315,946282,662
Events in quadrant C1,131,701289,383
Events in quadrant D1,857,462262,204

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08628
B08634
C08628
D08626

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A084832925
B094063523
C085993008
D0121834696

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A084
B085
C084
D086

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A277120.072176%
B2706281.034738%
C277010.036101%
D2656160.602410%

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 4578 3080 0 0 0.00% 0.00%
B 4592 3011 13 13 0.28% 0.43%
C 4605 3097 0 0 0.00% 0.00%
D 4493 2986 17 17 0.38% 0.57%

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 12 189 15211 245.23 291 286 60.9
A 0 226 2612 38.22 291 286 60.9
A 12 194 2065 29.23 291 286 60.9
B 4 239 151234 2696.75 287 280 56.0
B 11 51 16055 281.82 287 280 56.0
B 3 64 15261 267.63 287 280 56.0
C 15 208 15623 227.01 286 287 67.6
C 13 61 2004 25.42 286 287 67.6
C 8 222 1282 14.73 286 287 67.6
D 10 157 663949 10059.09 267 260 66.0
D 1 52 159837 2418.6 267 260 66.0
D 13 104 14767 219.87 267 260 66.0

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