ASTROSAT CZTI

Data Quality Report

Orbit 37060

Creation date: 2024-06-27T21:34:58.109321
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/AS1A09_026T06_9000005278_37060cztM0_level2.evt modeM0/AS1A09_026T06_9000005278_37060cztM0_level2_quad_clean.evt
Size (bytes)89,360,64014,823,360
Size85.2 MB 14.1 MB
Events in quadrant A437,466101,844
Events in quadrant B614,30596,631
Events in quadrant C547,79494,806
Events in quadrant D1,050,22392,359

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018052
B023411
C020991
D036631

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79020.253165%
B790698.734177%
C7908310.506329%
D7909812.405063%

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 790 790 2 2 0.25% 0.25%
B 790 790 52 52 6.58% 6.58%
C 790 790 54 54 6.84% 6.84%
D 790 790 132 132 16.71% 16.71%

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 10 83 84392 4349.15 87 85 19.4
A 7 3 6020 306.17 87 85 19.4
A 10 67 2827 141.45 87 85 19.4
B 5 184 136195 7466.91 84 81 18.2
B 5 172 62264 3411.22 84 81 18.2
B 0 190 41190 2255.15 84 81 18.2
C 0 10 184026 8559.37 82 83 21.5
C 15 214 35691 1656.94 82 83 21.5
C 15 159 2572 115.82 82 83 21.5
D 6 112 517979 23024.26 85 82 22.5
D 1 52 104107 4624.66 85 82 22.5
D 13 249 19076 844.42 85 82 22.5

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