ASTROSAT CZTI

Data Quality Report

Orbit 17928

Creation date: 2024-06-27T17:42:43.119383
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_025T01_9000002670_17928cztM0_level2.evt modeM0/AS1T03_025T01_9000002670_17928cztM0_level2_quad_clean.evt
Size (bytes)494,838,72090,100,800
Size471.9 MB 85.9 MB
Events in quadrant A3,368,502567,451
Events in quadrant B3,425,897579,996
Events in quadrant C3,334,071546,250
Events in quadrant D4,371,624536,388

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147342
B0146762
C0145932
D0179672

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7153981.370055%
B7153991.384035%
C71541101.537601%
D71541812.530053%

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 8688 7155 3 3 0.03% 0.04%
B 8688 7155 2 2 0.02% 0.03%
C 8689 7155 4 4 0.05% 0.06%
D 8689 7156 91 91 1.05% 1.27%

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 72320 409.52 855 835 174.6
A 0 226 7329 37.2 855 835 174.6
A 3 137 6488 32.38 855 835 174.6
B 0 189 31085 183.31 854 833 165.0
B 12 111 20012 116.21 854 833 165.0
B 11 111 17299 99.77 854 833 165.0
C 14 238 126018 659.32 810 811 189.9
C 3 233 18398 92.61 810 811 189.9
C 9 160 16807 84.23 810 811 189.9
D 7 238 1055708 5312.39 818 793 198.6
D 10 70 62527 310.88 818 793 198.6
D 7 223 55374 274.86 818 793 198.6

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