ASTROSAT CZTI

Data Quality Report

Orbit 16356

Creation date: 2024-06-27T17:21:29.846661
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_069T02_9000002414_16356cztM0_level2.evt modeM0/AS1A05_069T02_9000002414_16356cztM0_level2_quad_clean.evt
Size (bytes)470,796,48065,468,160
Size449.0 MB 62.4 MB
Events in quadrant A3,306,548393,187
Events in quadrant B3,577,395403,391
Events in quadrant C3,453,177375,927
Events in quadrant D3,488,136364,659

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134702
B0143641
C0139291
D0144161

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6382570.893137%
B6382951.488562%
C6382921.441554%
D6382500.783453%

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 7748 6384 0 0 0.00% 0.00%
B 7748 6384 17 17 0.22% 0.27%
C 7748 6384 2 2 0.03% 0.03%
D 7748 6384 22 22 0.28% 0.34%

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 0 226 7532 39.74 857 843 168.3
A 12 194 6294 32.38 857 843 168.3
A 3 137 5499 27.66 857 843 168.3
B 15 35 77431 481.29 861 842 159.1
B 4 173 43314 266.9 861 842 159.1
B 10 16 31260 191.15 861 842 159.1
C 14 238 130085 691.3 814 823 187.0
C 3 233 93505 495.67 814 823 187.0
C 10 169 45240 237.55 814 823 187.0
D 2 122 102045 512.39 817 795 197.6
D 1 52 98415 494.02 817 795 197.6
D 12 218 69995 350.19 817 795 197.6

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