ASTROSAT CZTI

Data Quality Report

Orbit 45067

Creation date: 2024-06-27T23:09:33.733290
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_020T01_9000006040_45067cztM0_level2.fits modeM0/AS1A13_020T01_9000006040_45067cztM0_level2_quad_clean.evt
Size (bytes)516,870,720112,478,400
Size492.9 MB 107.3 MB
Events in quadrant A5,465,284756,934
Events in quadrant B3,172,889795,372
Events in quadrant C3,194,953767,005
Events in quadrant D6,797,666634,790

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0207972
B0135662
C0137292
D0247182

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64751902.934363%
B6475911.405405%
C6475821.266409%
D647578012.046332%

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 7635 6476 10 10 0.13% 0.15%
B 7635 6476 5 5 0.07% 0.08%
C 7635 6476 26 26 0.34% 0.40%
D 7635 6476 594 594 7.78% 9.17%

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 2407188 15096.09 772 756 159.4
A 15 174 26692 162.7 772 756 159.4
A 10 248 19196 115.68 772 756 159.4
B 0 168 37706 245.26 772 750 150.7
B 4 171 23680 152.17 772 750 150.7
B 12 111 18403 117.15 772 750 150.7
C 14 254 90014 490.18 775 780 182.0
C 1 3 48131 260.11 775 780 182.0
C 0 207 19681 103.83 775 780 182.0
D 13 174 1505315 8190.39 734 714 183.7
D 5 235 503334 2736.04 734 714 183.7
D 1 52 456895 2483.25 734 714 183.7

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