ASTROSAT CZTI

Data Quality Report

Orbit 06874

Creation date: 2024-06-27T15:12:37.422097
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/AS1A02_005T01_9000000948_06874cztM0_level2.evt modeM0/AS1A02_005T01_9000000948_06874cztM0_level2_quad_clean.evt
Size (bytes)461,096,64065,721,600
Size439.7 MB 62.7 MB
Events in quadrant A3,266,151389,198
Events in quadrant B3,406,349391,314
Events in quadrant C3,345,130385,490
Events in quadrant D3,511,798377,102

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137773
B0142712
C0138022
D0145152

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6410741.154446%
B6410771.201248%
C6410811.263651%
D6410671.045242%

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 7720 6411 0 0 0.00% 0.00%
B 7720 6411 3 3 0.04% 0.05%
C 7720 6411 0 0 0.00% 0.00%
D 7720 6411 9 9 0.12% 0.14%

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 13 248 11414 62.24 842 826 170.1
A 0 226 8151 43.06 842 826 170.1
A 12 194 7847 41.27 842 826 170.1
B 0 219 51866 321.35 842 824 158.8
B 15 204 37248 229.32 842 824 158.8
B 4 48 19353 116.66 842 824 158.8
C 9 247 143472 762.16 816 822 187.2
C 13 61 6597 30.85 816 822 187.2
C 12 4 4616 20.27 816 822 187.2
D 12 221 164727 817.12 825 799 200.6
D 8 195 99999 494.48 825 799 200.6
D 13 169 51786 254.15 825 799 200.6

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