ASTROSAT CZTI

Data Quality Report

Orbit 51150

Creation date: 2025-03-22T08:55:30.817242
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_51150cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51150cztM0_level2_quad_clean.evt
Size (bytes)839,185,92087,713,280
Size800.3 MB 83.6 MB
Events in quadrant A7,916,169566,367
Events in quadrant B6,092,361606,114
Events in quadrant C12,139,629391,555
Events in quadrant D4,360,167591,301

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0285292
B0230710
C0409950
D0181510

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7180123117.144847%
B7180133918.649025%
C7181314143.740426%
D71812243.119343%

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 7180 7180 772 772 10.75% 10.75%
B 7180 7180 529 529 7.37% 7.37%
C 7181 7181 2916 2916 40.61% 40.61%
D 7181 7181 182 182 2.53% 2.53%

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 12 80 2315994 13000.04 723 705 178.1
A 12 3 1734740 9736.38 723 705 178.1
A 12 194 199552 1116.5 723 705 178.1
B 12 32 2291579 15529.34 691 666 147.5
B 4 171 300334 2031.35 691 666 147.5
B 5 185 194932 1316.87 691 666 147.5
C 12 247 8300313 48248.27 624 618 172.0
C 13 3 597827 3471.73 624 618 172.0
C 4 13 118567 685.67 624 618 172.0
D 3 12 415598 2052.18 724 699 202.2
D 11 176 213927 1054.67 724 699 202.2
D 2 249 137923 678.74 724 699 202.2

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