ASTROSAT CZTI

Data Quality Report

Orbit 12842

Creation date: 2024-06-27T16:33:01.519357
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_071T01_9000001888_12842cztM0_level2.evt modeM0/AS1G08_071T01_9000001888_12842cztM0_level2_quad_clean.evt
Size (bytes)603,218,88097,208,640
Size575.3 MB 92.7 MB
Events in quadrant A3,497,961627,068
Events in quadrant B6,698,684571,505
Events in quadrant C3,442,787627,048
Events in quadrant D4,126,424602,246

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154503
B0249352
C0153152
D0173192

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74171031.388702%
B7417139418.794661%
C7417931.253876%
D74171912.575165%

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 8653 7420 0 0 0.00% 0.00%
B 8653 7420 974 974 11.26% 13.13%
C 8653 7420 0 0 0.00% 0.00%
D 8653 7420 66 66 0.76% 0.89%

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 12 189 43143 232.0 897 878 182.2
A 0 226 7961 38.88 897 878 182.2
A 12 194 7013 33.67 897 878 182.2
B 10 245 2715425 17153.85 829 809 158.3
B 4 239 322539 2033.03 829 809 158.3
B 0 219 108734 681.99 829 809 158.3
C 3 233 12674 57.75 879 884 204.2
C 13 61 6418 27.11 879 884 204.2
C 14 234 2836 9.56 879 884 204.2
D 1 52 370984 1762.1 871 844 210.1
D 13 104 192200 910.98 871 844 210.1
D 8 195 91967 433.8 871 844 210.1

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