ASTROSAT CZTI

Data Quality Report

Orbit 45675

Creation date: 2024-06-27T23:14:52.870041
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/AS1A13_093T12_9000006118_45675cztM0_level2.fits modeM0/AS1A13_093T12_9000006118_45675cztM0_level2_quad_clean.evt
Size (bytes)454,484,160108,673,920
Size433.4 MB 103.6 MB
Events in quadrant A5,549,622733,026
Events in quadrant B3,190,251753,257
Events in quadrant C3,413,720714,394
Events in quadrant D4,171,370641,777

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0206151
B0137461
C0147551
D0167993

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6425981.525292%
B6425801.245136%
C64251021.587549%
D64242523.922790%

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 7575 6426 4 4 0.05% 0.06%
B 7575 6426 42 42 0.55% 0.65%
C 7575 6425 87 87 1.15% 1.35%
D 7574 6425 233 233 3.08% 3.63%

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 10 83 2686705 18015.45 725 712 149.1
A 13 248 41470 273.37 725 712 149.1
A 13 6 10682 66.87 725 712 149.1
B 5 172 133557 953.95 720 698 139.3
B 7 221 53027 375.73 720 698 139.3
B 0 155 51053 361.56 720 698 139.3
C 14 254 669409 4113.37 698 704 162.6
C 0 207 9829 56.13 698 704 162.6
C 3 233 5592 30.07 698 704 162.6
D 13 249 1113617 6352.37 693 672 175.2
D 1 52 267561 1523.33 693 672 175.2
D 2 249 86039 487.25 693 672 175.2

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