ASTROSAT CZTI

Data Quality Report

Orbit 08601

Creation date: 2024-06-27T15:34:50.053855
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/AS1A03_102T01_9000001202_08601cztM0_level2.evt modeM0/AS1A03_102T01_9000001202_08601cztM0_level2_quad_clean.evt
Size (bytes)457,024,320100,658,880
Size435.9 MB 96.0 MB
Events in quadrant A3,374,644639,019
Events in quadrant B3,587,614661,661
Events in quadrant C2,990,238649,167
Events in quadrant D3,419,424617,950

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151382
B0153691
C0140711
D0152883

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68952173.147208%
B68952563.712835%
C68951151.667875%
D68941982.872063%

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 7155 6896 36 36 0.50% 0.52%
B 7155 6896 47 47 0.66% 0.68%
C 7155 6897 0 0 0.00% 0.00%
D 7155 6897 69 69 0.96% 1.00%

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 13 248 270984 1704.22 769 751 158.6
A 15 174 59498 370.49 769 751 158.6
A 5 16 46269 287.06 769 751 158.6
B 10 16 339421 2273.8 782 764 148.9
B 0 214 74754 496.78 782 764 148.9
B 0 187 40967 269.93 782 764 148.9
C 12 16 9937 52.19 758 757 175.9
C 14 67 6923 35.06 758 757 175.9
C 13 61 5738 28.32 758 757 175.9
D 12 233 166222 900.84 748 723 183.7
D 5 172 91675 495.07 748 723 183.7
D 13 105 90497 488.65 748 723 183.7

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