ASTROSAT CZTI

Data Quality Report

Orbit 17903

Creation date: 2024-06-27T17:42:24.916394
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/AS1A05_109T01_9000002662_17903cztM0_level2.evt modeM0/AS1A05_109T01_9000002662_17903cztM0_level2_quad_clean.evt
Size (bytes)466,856,64083,016,000
Size445.2 MB 79.2 MB
Events in quadrant A3,428,443516,566
Events in quadrant B3,480,281533,904
Events in quadrant C3,356,651516,358
Events in quadrant D3,443,979505,757

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144092
B0145922
C0141423
D0145762

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63191161.835734%
B6319590.933692%
C6318961.519468%
D6318520.823045%

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 7584 6320 55 55 0.73% 0.87%
B 7584 6320 1 1 0.01% 0.02%
C 7583 6319 2 2 0.03% 0.03%
D 7583 6319 7 7 0.09% 0.11%

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 15 174 194529 1145.36 841 823 169.1
A 0 226 7437 39.1 841 823 169.1
A 12 194 6150 31.5 841 823 169.1
B 0 189 80776 501.53 850 831 159.4
B 0 197 31135 190.11 850 831 159.4
B 12 111 17855 106.8 850 831 159.4
C 14 238 128321 667.66 823 831 191.0
C 9 54 7950 37.28 823 831 191.0
C 3 233 6455 29.45 823 831 191.0
D 5 222 64353 313.78 833 811 202.5
D 12 110 57679 280.82 833 811 202.5
D 13 168 51167 248.66 833 811 202.5

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