ASTROSAT CZTI

Data Quality Report

Orbit 52146

Creation date: 2025-05-19T18:02:43.002180
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/AS1C09_011T07_9000006470_52146cztM0_level2.fits modeM0/AS1C09_011T07_9000006470_52146cztM0_level2_quad_clean.evt
Size (bytes)834,943,68076,354,560
Size796.3 MB 72.8 MB
Events in quadrant A4,751,915570,535
Events in quadrant B4,741,315608,672
Events in quadrant C7,121,010466,641
Events in quadrant D13,800,875222,486

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0183785
B0184442
C0256291
D0453022

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63525178.139169%
B63535558.736030%
C6354150423.670129%
D6353425867.023453%

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 7348 6353 402 402 5.47% 6.33%
B 7348 6354 406 406 5.53% 6.39%
C 7349 6355 1349 1349 18.36% 21.23%
D 7348 6353 4205 4205 57.23% 66.19%

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 95 1139358 6877.66 663 647 165.6
A 15 174 180795 1088.07 663 647 165.6
A 14 254 162453 977.29 663 647 165.6
B 4 81 1075768 7839.02 644 623 137.2
B 5 185 415658 3026.07 644 623 137.2
B 10 254 145238 1054.41 644 623 137.2
C 15 224 2455890 14888.0 585 577 164.9
C 6 252 844297 5115.97 585 577 164.9
C 1 45 600118 3635.37 585 577 164.9
D 6 42 10325968 71678.72 499 477 144.1
D 15 94 469968 3259.17 499 477 144.1
D 12 3 232744 1612.38 499 477 144.1

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