ASTROSAT CZTI

Data Quality Report

Orbit 47880

Creation date: 2024-08-05T07:45:12.883019
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/AS1A13_053T01_9000006370_47880cztM0_level2.fits modeM0/AS1A13_053T01_9000006370_47880cztM0_level2_quad_clean.evt
Size (bytes)514,987,200106,243,200
Size491.1 MB 101.3 MB
Events in quadrant A6,575,608703,268
Events in quadrant B2,934,421750,716
Events in quadrant C2,877,837726,977
Events in quadrant D6,181,065591,614

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0238132
B0131402
C0130722
D0229882

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63742213.467211%
B6374360.564794%
C6374120.188265%
D637481812.833386%

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 7564 6375 85 85 1.12% 1.33%
B 7564 6375 0 0 0.00% 0.00%
C 7564 6375 3 3 0.04% 0.05%
D 7564 6375 735 735 9.72% 11.53%

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 3829720 26325.24 704 688 145.5
A 13 248 12426 80.7 704 688 145.5
A 7 3 11543 74.63 704 688 145.5
B 0 198 29363 206.51 719 696 138.8
B 0 197 26805 188.08 719 696 138.8
B 12 111 17714 122.59 719 696 138.8
C 14 254 48537 281.4 722 725 169.9
C 3 233 11661 64.37 722 725 169.9
C 13 61 4767 23.79 722 725 169.9
D 2 37 2194022 12962.61 679 659 169.2
D 2 165 560881 3310.87 679 659 169.2
D 7 96 296968 1751.16 679 659 169.2

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