ASTROSAT CZTI

Data Quality Report

Orbit 13672

Creation date: 2024-06-27T16:44:20.119468
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/AS1G08_070T01_9000002028_13672cztM0_level2.evt modeM0/AS1G08_070T01_9000002028_13672cztM0_level2_quad_clean.evt
Size (bytes)530,844,48097,692,480
Size506.3 MB 93.2 MB
Events in quadrant A3,227,931635,524
Events in quadrant B3,599,603681,930
Events in quadrant C3,441,527606,825
Events in quadrant D5,345,504559,495

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139003
B0149342
C0142902
D0206072

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6804400.587889%
B6804640.940623%
C6804340.499706%
D68046269.200470%

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 7640 6806 0 0 0.00% 0.00%
B 7640 6806 10 10 0.13% 0.15%
C 7640 6806 5 5 0.07% 0.07%
D 7640 6806 586 586 7.67% 8.61%

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 9 143 11296 61.16 832 816 171.4
A 1 162 9553 50.99 832 816 171.4
A 0 226 7220 37.37 832 816 171.4
B 0 219 167325 1026.95 848 831 162.1
B 0 182 45715 276.85 848 831 162.1
B 0 214 30810 184.91 848 831 162.1
C 3 233 271698 1444.64 804 807 187.5
C 14 234 15512 78.42 804 807 187.5
C 14 220 15224 76.88 804 807 187.5
D 13 122 1764090 9286.48 780 760 189.9
D 5 222 341031 1792.02 780 760 189.9
D 1 52 148395 777.51 780 760 189.9

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