ASTROSAT CZTI

Data Quality Report

Orbit 25914

Creation date: 2024-06-27T19:22:45.677289
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_068T01_9000003756_25914cztM0_level2.evt modeM0/AS1A07_068T01_9000003756_25914cztM0_level2_quad_clean.evt
Size (bytes)645,782,400101,185,920
Size615.9 MB 96.5 MB
Events in quadrant A7,549,980611,098
Events in quadrant B3,576,742670,896
Events in quadrant C3,496,522634,651
Events in quadrant D4,436,455635,337

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0274760
B0153040
C0151990
D0182890

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7352108214.717084%
B7352941.278564%
C7352771.047334%
D7352600.816104%

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 7712 7353 757 757 9.82% 10.30%
B 7712 7353 0 0 0.00% 0.00%
C 7712 7353 1 1 0.01% 0.01%
D 7712 7353 64 64 0.83% 0.87%

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 0 13 4238984 24530.14 859 842 172.8
A 13 254 9770 51.67 859 842 172.8
A 3 137 8234 42.78 859 842 172.8
B 0 219 49691 284.71 889 867 171.5
B 0 190 28910 163.53 889 867 171.5
B 12 111 21327 119.31 889 867 171.5
C 14 238 136280 682.31 846 850 198.5
C 2 16 43130 213.01 846 850 198.5
C 3 233 17784 85.32 846 850 198.5
D 1 52 1132639 5432.03 859 836 208.4
D 2 234 31344 146.42 859 836 208.4
D 7 80 17130 78.2 859 836 208.4

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