ASTROSAT CZTI

Data Quality Report

Orbit 08781

Creation date: 2024-06-27T15:37:08.016883
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/AS1G07_010T02_9000001222_08781cztM0_level2.evt modeM0/AS1G07_010T02_9000001222_08781cztM0_level2_quad_clean.evt
Size (bytes)480,245,76069,405,120
Size458.0 MB 66.2 MB
Events in quadrant A3,535,379429,166
Events in quadrant B2,995,791446,404
Events in quadrant C2,857,077441,186
Events in quadrant D4,751,529369,006

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165722255
B0145031749
C0141891698
D0225224320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014018
B014014
C01406
D013918

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0203
B0202
C0203
D0205

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59631392.331041%
B60541121.850017%
C6054731.205814%
D56432835.015063%

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 8808 6585 16 16 0.18% 0.24%
B 8808 6644 11 11 0.12% 0.17%
C 8808 6630 1 1 0.01% 0.02%
D 8808 6402 176 176 2.00% 2.75%

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 8 5 519805 3434.76 738 722 151.1
A 13 251 85234 559.21 738 722 151.1
A 15 223 63115 412.85 738 722 151.1
B 10 16 43949 297.05 749 731 145.5
B 5 255 33336 224.1 749 731 145.5
B 12 111 16159 106.04 749 731 145.5
C 1 16 23468 135.36 723 726 168.0
C 13 61 5544 28.67 723 726 168.0
C 12 4 3987 19.41 723 726 168.0
D 2 16 1354594 7954.89 663 646 170.2
D 1 52 460923 2704.28 663 646 170.2
D 2 152 218989 1282.83 663 646 170.2

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