ASTROSAT CZTI

Data Quality Report

Orbit 23986

Creation date: 2024-06-27T19:00:50.933023
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/AS1A07_165T01_9000003558_23986cztM0_level2.evt modeM0/AS1A07_165T01_9000003558_23986cztM0_level2_quad_clean.evt
Size (bytes)554,667,840121,397,760
Size529.0 MB 115.8 MB
Events in quadrant A2,927,792874,499
Events in quadrant B2,981,867883,800
Events in quadrant C3,390,380820,395
Events in quadrant D7,095,717683,222

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123021
B0124041
C0137201
D0251621

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59241011.704929%
B59251081.822785%
C59252764.658228%
D5924171929.017556%

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 7114 5925 0 0 0.00% 0.00%
B 7115 5926 1 1 0.01% 0.02%
C 7115 5926 93 93 1.31% 1.57%
D 7114 5925 1054 1054 14.82% 17.79%

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 10439 64.97 757 744 149.2
A 2 79 9008 55.38 757 744 149.2
A 0 226 6669 39.71 757 744 149.2
B 0 197 21404 150.87 752 737 137.0
B 12 111 15533 108.01 752 737 137.0
B 11 111 13343 92.03 752 737 137.0
C 0 10 484487 2999.62 703 708 161.3
C 14 238 115290 710.45 703 708 161.3
C 0 239 26708 161.21 703 708 161.3
D 12 218 2989615 19768.73 624 605 151.2
D 12 233 687419 4542.45 624 605 151.2
D 8 195 310053 2046.63 624 605 151.2

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