ASTROSAT CZTI

Data Quality Report

Orbit 27517

Creation date: 2024-06-27T19:40:53.693950
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/AS1T03_249T01_9000003934_27517cztM0_level2.evt modeM0/AS1T03_249T01_9000003934_27517cztM0_level2_quad_clean.evt
Size (bytes)468,809,280101,010,240
Size447.1 MB 96.3 MB
Events in quadrant A3,270,801671,370
Events in quadrant B3,351,414688,372
Events in quadrant C3,273,399641,770
Events in quadrant D3,870,415613,817

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134140
B0137420
C0134380
D0155380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6357340.534843%
B6358570.896508%
C6358941.478452%
D63581432.249135%

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 7677 6358 0 0 0.00% 0.00%
B 7678 6359 1 1 0.01% 0.02%
C 7678 6359 0 0 0.00% 0.00%
D 7678 6359 139 139 1.81% 2.19%

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 15 174 11394 63.0 844 829 167.7
A 13 254 9305 50.55 844 829 167.7
A 3 137 7444 39.45 844 829 167.7
B 15 32 34547 212.99 842 822 158.3
B 12 111 19071 115.25 842 822 158.3
B 11 111 16639 99.89 842 822 158.3
C 14 238 131852 695.56 806 813 188.4
C 13 61 5367 24.17 806 813 188.4
C 3 233 3603 14.81 806 813 188.4
D 7 80 381594 2020.15 797 779 188.5
D 1 52 296095 1566.6 797 779 188.5
D 11 176 85991 452.03 797 779 188.5

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