ASTROSAT CZTI

Data Quality Report

Orbit 44252

Creation date: 2024-06-27T23:01:00.759223
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_079T01_9000005978_44252cztM0_level2.fits modeM0/AS1A13_079T01_9000005978_44252cztM0_level2_quad_clean.evt
Size (bytes)790,208,64065,871,360
Size753.6 MB 62.8 MB
Events in quadrant A13,416,303140,254
Events in quadrant B3,548,711521,541
Events in quadrant C3,597,023500,809
Events in quadrant D8,150,639348,373

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0477333112
B015755510
C016272564
D0300351093

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01482
B01484
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153
B0142
C0153
D0164

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6750482871.525926%
B70011992.842451%
C69941962.802402%
D6937250236.067464%

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 11875 6921 3752 3752 31.60% 54.21%
B 11875 7102 14 14 0.12% 0.20%
C 11876 7105 33 33 0.28% 0.46%
D 11876 7067 1298 1298 10.93% 18.37%

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 15 223 10697752 113737.4 453 444 94.1
A 10 83 839280 8918.79 453 444 94.1
A 7 3 93596 990.42 453 444 94.1
B 4 158 129480 822.85 794 771 156.4
B 5 255 81530 516.3 794 771 156.4
B 4 170 61766 389.95 794 771 156.4
C 2 14 304615 1619.24 794 799 187.6
C 14 254 184975 981.6 794 799 187.6
C 3 233 7063 33.39 794 799 187.6
D 4 221 2871664 18368.59 615 597 156.3
D 12 2 1880084 12024.63 615 597 156.3
D 1 52 370093 2363.97 615 597 156.3

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