ASTROSAT CZTI

Data Quality Report

Orbit 47499

Creation date: 2024-07-10T16:28:05.767875
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_089T01_9000006330_47499cztM0_level2.fits modeM0/AS1A13_089T01_9000006330_47499cztM0_level2_quad_clean.evt
Size (bytes)532,068,480111,769,920
Size507.4 MB 106.6 MB
Events in quadrant A7,380,630732,840
Events in quadrant B4,568,474754,642
Events in quadrant C3,154,361739,117
Events in quadrant D4,046,229667,338

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0276222
B0181732
C0144442
D0170002

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70383344.745666%
B70383394.816709%
C7037600.852636%
D70372062.927384%

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 7918 7039 18 18 0.23% 0.26%
B 7918 7039 144 144 1.82% 2.05%
C 7917 7038 4 4 0.05% 0.06%
D 7917 7038 124 124 1.57% 1.76%

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 4186007 24986.79 796 778 167.5
A 9 191 72896 430.56 796 778 167.5
A 13 248 34540 201.57 796 778 167.5
B 0 200 629302 3958.74 792 767 158.8
B 5 32 558482 3512.69 792 767 158.8
B 0 198 111374 696.64 792 767 158.8
C 0 207 61328 324.57 789 791 186.5
C 3 233 10123 50.03 789 791 186.5
C 12 250 6565 30.96 789 791 186.5
D 2 249 314583 1578.76 785 757 198.8
D 5 32 186453 934.18 785 757 198.8
D 2 165 181269 908.1 785 757 198.8

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