ASTROSAT CZTI

Data Quality Report

Orbit 42306

Creation date: 2024-06-27T22:38:48.992278
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_102T01_9000005794_42306cztM0_level2.fits modeM0/AS1A12_102T01_9000005794_42306cztM0_level2_quad_clean.evt
Size (bytes)204,811,20055,431,360
Size195.3 MB 52.9 MB
Events in quadrant A1,805,514373,550
Events in quadrant B1,550,045378,804
Events in quadrant C1,605,813362,229
Events in quadrant D2,356,595324,835

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0720
B0720
C0720
D0720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A072661
B069441
C068481
D094001

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A336160.178518%
B3361110.327284%
C336170.208271%
D33611965.831598%

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 4642 3362 2 2 0.04% 0.06%
B 4642 3362 2 2 0.04% 0.06%
C 4642 3362 0 0 0.00% 0.00%
D 4642 3362 157 157 3.38% 4.67%

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 328717 4175.93 377 369 78.6
A 7 3 10759 132.14 377 369 78.6
A 13 254 4235 49.17 377 369 78.6
B 4 171 61454 818.99 372 361 74.6
B 12 111 9211 118.64 372 361 74.6
B 0 229 8833 113.57 372 361 74.6
C 15 214 140710 1600.17 368 369 87.7
C 15 159 20761 232.51 368 369 87.7
C 12 249 4665 48.98 368 369 87.7
D 1 52 580344 6380.34 361 349 90.9
D 12 6 177538 1949.2 361 349 90.9
D 12 233 139426 1529.94 361 349 90.9

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