ASTROSAT CZTI

Data Quality Report

Orbit 48536

Creation date: 2024-09-19T21:18:42.752956
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_037T01_9000006436_48536cztM0_level2.fits modeM0/AS1A13_037T01_9000006436_48536cztM0_level2_quad_clean.evt
Size (bytes)535,478,400105,788,160
Size510.7 MB 100.9 MB
Events in quadrant A7,150,163691,169
Events in quadrant B3,296,115737,379
Events in quadrant C2,978,373721,227
Events in quadrant D5,852,313564,690

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0264322
B0150282
C0144802
D0227582

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70153805.416964%
B70152183.107627%
C7015861.225944%
D7015109215.566643%

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 7775 7016 11 11 0.14% 0.16%
B 7775 7016 19 19 0.24% 0.27%
C 7775 7016 1 1 0.01% 0.01%
D 7775 7016 813 813 10.46% 11.59%

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 4098957 26172.95 752 737 156.6
A 12 189 127895 812.08 752 737 156.6
A 13 254 12552 75.46 752 737 156.6
B 5 255 190511 1247.69 763 739 152.1
B 0 186 41703 269.33 763 739 152.1
B 0 183 20264 128.37 763 739 152.1
C 12 250 12806 67.04 757 759 179.7
C 14 254 8773 44.59 757 759 179.7
C 13 61 5041 23.83 757 759 179.7
D 2 165 2830489 15977.51 700 677 177.1
D 2 249 200305 1127.13 700 677 177.1
D 12 233 65252 364.6 700 677 177.1

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