ASTROSAT CZTI

Data Quality Report

Orbit 13726

Creation date: 2024-06-27T16:45:13.121898
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_039T01_9000002036_13726cztM0_level2.evt modeM0/AS1G08_039T01_9000002036_13726cztM0_level2_quad_clean.evt
Size (bytes)541,388,16087,390,720
Size516.3 MB 83.3 MB
Events in quadrant A3,764,448532,997
Events in quadrant B4,264,914568,733
Events in quadrant C3,937,238519,979
Events in quadrant D3,910,886493,185

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161791
B0173910
C0164010
D0166840

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76292973.893040%
B76293234.233845%
C76292192.870625%
D76292443.198322%

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 7630 7630 2 2 0.03% 0.03%
B 7630 7630 7 7 0.09% 0.09%
C 7630 7630 8 8 0.10% 0.10%
D 7630 7630 12 12 0.16% 0.16%

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 9 143 35875 176.16 962 940 198.3
A 1 162 16025 76.07 962 940 198.3
A 0 226 8417 37.7 962 940 198.3
B 8 250 129065 690.49 966 945 185.5
B 4 173 103601 553.25 966 945 185.5
B 4 48 70858 376.79 966 945 185.5
C 3 233 211088 962.79 933 940 218.3
C 4 254 85478 387.31 933 940 218.3
C 13 61 6927 27.43 933 940 218.3
D 8 195 115433 508.27 933 908 225.3
D 5 222 75101 329.27 933 908 225.3
D 1 52 62080 271.48 933 908 225.3

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