ASTROSAT CZTI

Data Quality Report

Orbit 46120

Creation date: 2024-06-27T23:19:28.103397
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_092T04_9000006172_46120cztM0_level2.fits modeM0/AS1A13_092T04_9000006172_46120cztM0_level2_quad_clean.evt
Size (bytes)560,845,44097,727,040
Size534.9 MB 93.2 MB
Events in quadrant A5,409,290661,790
Events in quadrant B3,461,861686,853
Events in quadrant C3,019,388676,645
Events in quadrant D8,371,827485,226

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0199520
B0145650
C0135910
D0292610

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64252754.280156%
B64252563.984436%
C6426741.151572%
D6426167025.988173%

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 6425 6425 0 0 0.00% 0.00%
B 6425 6425 21 21 0.33% 0.33%
C 6426 6426 8 8 0.12% 0.12%
D 6426 6426 1201 1201 18.69% 18.69%

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 2457151 15522.03 749 732 158.3
A 0 247 26285 161.47 749 732 158.3
A 13 6 11551 68.36 749 732 158.3
B 12 16 206879 1358.09 747 721 151.8
B 3 112 139335 913.14 747 721 151.8
B 0 190 51588 335.09 747 721 151.8
C 12 2 54243 305.14 741 744 175.3
C 2 14 32338 180.2 741 744 175.3
C 3 9 21581 118.85 741 744 175.3
D 1 52 2171001 13292.44 647 627 163.3
D 2 37 1874000 11473.46 647 627 163.3
D 13 249 1238307 7580.16 647 627 163.3

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