ASTROSAT CZTI

Data Quality Report

Orbit 51165

Creation date: 2025-03-15T15:58:42.053531
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/AS1C07_001T01_9000006454_51165cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51165cztM0_level2_quad_clean.evt
Size (bytes)1,024,848,00087,030,720
Size977.4 MB 83.0 MB
Events in quadrant A10,868,818552,946
Events in quadrant B6,479,185606,583
Events in quadrant C6,542,924609,092
Events in quadrant D13,505,952376,783

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0372520
B0241050
C0243450
D0449860

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7023145320.689164%
B7023116816.631069%
C70243915.566629%
D7024297542.354784%

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 7023 7023 1410 1410 20.08% 20.08%
B 7023 7023 844 844 12.02% 12.02%
C 7024 7024 379 379 5.40% 5.40%
D 7023 7023 3444 3444 49.04% 49.04%

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 4 4 3567914 20578.39 693 675 173.3
A 12 80 2239877 12917.32 693 675 173.3
A 12 3 1202725 6934.29 693 675 173.3
B 12 32 1675999 11670.51 671 648 143.6
B 10 60 895861 6236.06 671 648 143.6
B 5 185 277068 1925.54 671 648 143.6
C 12 247 1033943 5458.96 692 687 189.3
C 3 233 551648 2910.87 692 687 189.3
C 13 3 478278 2523.24 692 687 189.3
D 8 176 10428424 62167.73 606 586 167.7
D 6 42 133709 793.64 606 586 167.7
D 2 216 106216 629.74 606 586 167.7

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