ASTROSAT CZTI

Data Quality Report

Orbit 35567

Creation date: 2024-06-27T21:15:10.266016
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/AS1T05_026T01_9000005092_35567cztM0_level2.evt modeM0/AS1T05_026T01_9000005092_35567cztM0_level2_quad_clean.evt
Size (bytes)413,585,28070,876,800
Size394.4 MB 67.6 MB
Events in quadrant A2,805,638439,924
Events in quadrant B2,822,054460,348
Events in quadrant C3,359,724456,610
Events in quadrant D3,199,120439,528

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112563
B0115722
C0131222
D0127282

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A497960.120506%
B49791322.651135%
C49791713.434425%
D49791883.775859%

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 9254 4981 0 0 0.00% 0.00%
B 9254 4981 63 63 0.68% 1.26%
C 9254 4981 118 118 1.28% 2.37%
D 9254 4981 156 156 1.69% 3.13%

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 15 169 416963 3611.39 580 570 115.3
A 10 83 129480 1118.04 580 570 115.3
A 13 6 16909 141.71 580 570 115.3
B 5 172 406225 3710.48 585 570 109.3
B 4 81 70856 642.9 585 570 109.3
B 0 189 23614 210.78 585 570 109.3
C 0 10 582306 4395.36 571 578 132.4
C 9 187 288927 2178.68 571 578 132.4
C 15 214 218535 1646.82 571 578 132.4
D 14 52 460958 3413.04 562 547 134.9
D 8 195 203531 1504.73 562 547 134.9
D 2 250 141422 1044.31 562 547 134.9

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