ASTROSAT CZTI

Data Quality Report

Orbit 20230301_A12_042T01_9000005522_level2

Creation date: 2023-03-03T10:21:55.277968
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_042T01_9000005522cztM0_level2.fits modeM0/AS1A12_042T01_9000005522cztM0_level2_quad_clean.evt
Size (bytes)257,843,520311,351,040
Size245.9 MB 296.9 MB
Events in quadrant A1,758,1522,491,996
Events in quadrant B1,691,2122,496,748
Events in quadrant C588,716146,439
Events in quadrant D1,423,0881,963,033

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06880
B06880
C06880
D06880

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0728720
B0719010
C02740980
D01075010

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A33936990.291726%
B339361250.368340%
C339363227595.105493%
D3393631599.308699%

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 45347 33931 0 0 0.00% 0.00%
B 45347 33934 0 0 0.00% 0.00%
C 45346 32727 0 0 0.00% 0.00%
D 45346 33782 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 1460 8.78 458 430 117.3
A 9 19 1453 8.72 458 430 117.3
A 7 110 1402 8.29 458 430 117.3
B 2 9 1449 11.28 448 427 90.6
B 3 80 1239 8.96 448 427 90.6
B 3 17 1212 8.66 448 427 90.6
C 3 202 503 8.24 155 147 43.2
C 1 81 493 8.01 155 147 43.2
C 1 80 483 7.78 155 147 43.2
D 4 160 1071 6.35 406 369 110.5
D 7 3 1068 6.33 406 369 110.5
D 10 189 1063 6.28 406 369 110.5

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