ASTROSAT CZTI

Data Quality Report

Orbit 14725

Creation date: 2024-06-27T16:58:57.605142
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/AS1A04_048T01_9000002176_14725cztM0_level2.evt modeM0/AS1A04_048T01_9000002176_14725cztM0_level2_quad_clean.evt
Size (bytes)551,246,400115,076,160
Size525.7 MB 109.7 MB
Events in quadrant A4,095,817745,140
Events in quadrant B3,945,708746,589
Events in quadrant C4,291,968722,312
Events in quadrant D3,816,563713,768

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174353
B0169512
C0178362
D0171662

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80121231.535197%
B80121161.447828%
C80121051.310534%
D80121031.285572%

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 8513 8014 14 14 0.16% 0.17%
B 8513 8015 3 3 0.04% 0.04%
C 8513 8014 20 20 0.23% 0.25%
D 8513 8016 39 39 0.46% 0.49%

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 8 15 176253 878.31 968 944 199.6
A 12 189 110765 550.21 968 944 199.6
A 15 69 33008 160.64 968 944 199.6
B 0 229 57136 304.76 964 939 184.4
B 0 205 30472 160.16 964 939 184.4
B 12 111 20949 108.52 964 939 184.4
C 3 233 582636 2692.15 926 929 216.1
C 0 207 70061 319.94 926 929 216.1
C 6 96 14587 63.21 926 929 216.1
D 15 0 89865 356.75 924 904 249.4
D 12 16 83072 329.51 924 904 249.4
D 2 234 30648 119.28 924 904 249.4

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