ASTROSAT CZTI

Data Quality Report

Orbit 20210611_C06_006T01_9000004456_level2

Creation date: 2021-06-12T17:34:57.610761
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/AS1C06_006T01_9000004456cztM0_level2_bc.evt modeM0/AS1C06_006T01_9000004456cztM0_level2_quad_clean.evt
Size (bytes)315,325,44096,275,520
Size300.7 MB 91.8 MB
Events in quadrant A1,469,342619,541
Events in quadrant B3,622,110614,413
Events in quadrant C1,822,738584,741
Events in quadrant D2,130,611588,778

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151460
B0224010
C0167660
D0164520

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73003474.753425%
B73004646.356164%
C73005397.383562%
D73002843.890411%

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 7300 7300 0 0 0.00% 0.00%
B 7300 7300 3 3 0.04% 0.04%
C 7300 7300 0 0 0.00% 0.00%
D 7300 7300 10 10 0.14% 0.14%

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 13 254 12659 141.61 379 372 86.8
A 12 194 2360 22.91 379 372 86.8
A 0 226 2265 21.82 379 372 86.8
B 6 159 1976294 26454.83 379 369 74.7
B 5 255 59199 787.65 379 369 74.7
B 0 230 51635 686.38 379 369 74.7
C 3 233 373516 4276.89 358 355 87.3
C 14 254 47895 544.87 358 355 87.3
C 2 114 13512 150.8 358 355 87.3
D 1 52 279834 3173.79 369 358 88.1
D 8 195 249983 2834.8 369 358 88.1
D 12 227 79026 893.37 369 358 88.1

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