ASTROSAT CZTI

Data Quality Report

Orbit 46677

Creation date: 2024-06-27T23:26:12.740261
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_092T16_9000006250_46677cztM0_level2.fits modeM0/AS1A13_092T16_9000006250_46677cztM0_level2_quad_clean.evt
Size (bytes)110,479,68018,936,000
Size105.4 MB 18.1 MB
Events in quadrant A1,529,741113,458
Events in quadrant B1,214,617123,020
Events in quadrant C525,064133,660
Events in quadrant D730,390118,265

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A053421
B044001
C023151
D029003

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A111920418.230563%
B111919617.515639%
C111940.357462%
D1118322.862254%

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 1119 1119 187 187 16.71% 16.71%
B 1119 1119 150 150 13.40% 13.40%
C 1119 1119 1 1 0.09% 0.09%
D 1119 1119 26 26 2.32% 2.32%

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 812724 30307.62 121 119 26.8
A 15 235 216635 8075.37 121 119 26.8
A 13 6 12322 455.13 121 119 26.8
B 15 201 585509 22245.02 126 122 26.3
B 0 189 96074 3646.23 126 122 26.3
B 4 171 10348 388.59 126 122 26.3
C 12 2 7188 220.02 129 130 32.1
C 9 54 5129 155.83 129 130 32.1
C 3 233 3610 108.48 129 130 32.1
D 1 52 93696 2838.99 125 121 33.0
D 12 233 40871 1236.32 125 121 33.0
D 12 128 34884 1054.68 125 121 33.0

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