ASTROSAT CZTI

Data Quality Report

Orbit 12996

Creation date: 2024-06-27T16:34:52.773194
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_055T01_9000001912_12996cztM0_level2.evt modeM0/AS1G08_055T01_9000001912_12996cztM0_level2_quad_clean.evt
Size (bytes)476,593,920103,374,720
Size454.5 MB 98.6 MB
Events in quadrant A3,289,579676,352
Events in quadrant B4,424,351665,852
Events in quadrant C3,122,025693,850
Events in quadrant D3,166,738651,938

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136063
B0172492
C0132602
D0135672

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6346230.362433%
B63465067.973527%
C6346390.614560%
D6346420.661834%

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 7588 6349 0 0 0.00% 0.00%
B 7588 6349 256 256 3.37% 4.03%
C 7588 6349 0 0 0.00% 0.00%
D 7588 6349 13 13 0.17% 0.20%

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 12 189 142631 889.56 796 781 159.5
A 8 15 30469 186.18 796 781 159.5
A 1 162 16976 101.56 796 781 159.5
B 4 239 857738 6086.83 773 754 140.8
B 10 245 341326 2418.95 773 754 140.8
B 0 219 56268 394.29 773 754 140.8
C 13 61 5853 27.69 800 805 182.3
C 14 234 2593 9.81 800 805 182.3
C 3 202 2033 6.74 800 805 182.3
D 8 195 92633 496.15 782 759 185.2
D 13 122 58218 310.3 782 759 185.2
D 1 52 28767 151.25 782 759 185.2

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