ASTROSAT CZTI

Data Quality Report

Orbit 30892

Creation date: 2024-06-27T20:20:51.804490
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/AS1A10_071T28_9000004464_30892cztM0_level2.evt modeM0/AS1A10_071T28_9000004464_30892cztM0_level2_quad_clean.evt
Size (bytes)576,636,48070,643,520
Size549.9 MB 67.4 MB
Events in quadrant A3,451,902431,151
Events in quadrant B5,579,143427,287
Events in quadrant C3,741,673404,548
Events in quadrant D4,230,772402,262

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141512
B0212072
C0150092
D0170442

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6795741.089036%
B67952053.016924%
C67951742.560706%
D6794821.206947%

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 7770 6795 0 0 0.00% 0.00%
B 7770 6795 10 10 0.13% 0.15%
C 7770 6795 18 18 0.23% 0.26%
D 7769 6795 40 40 0.51% 0.59%

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 13 254 11243 57.79 894 877 179.4
A 3 137 8799 44.17 894 877 179.4
A 0 226 7526 37.07 894 877 179.4
B 6 159 1836037 10778.13 883 863 170.3
B 6 36 149980 875.78 883 863 170.3
B 0 190 63690 368.99 883 863 170.3
C 0 10 204344 1032.15 841 849 197.2
C 14 238 136163 686.33 841 849 197.2
C 1 16 73659 369.3 841 849 197.2
D 8 195 754395 3752.35 848 829 200.8
D 2 250 100692 497.26 848 829 200.8
D 12 218 100652 497.06 848 829 200.8

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