ASTROSAT CZTI

Data Quality Report

Orbit 06551

Creation date: 2024-06-27T15:08:42.492350
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/AS1G05_246T04_9000000882_06551cztM0_level2.evt modeM0/AS1G05_246T04_9000000882_06551cztM0_level2_quad_clean.evt
Size (bytes)498,614,40085,947,840
Size475.5 MB 82.0 MB
Events in quadrant A3,556,959520,203
Events in quadrant B3,783,359524,909
Events in quadrant C3,433,399523,000
Events in quadrant D3,811,284506,577

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156093
B0162892
C0154995
D0166062

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7589811.067334%
B75891291.699829%
C7588740.975224%
D7589941.238635%

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 9229 7591 0 0 0.00% 0.00%
B 9229 7591 19 19 0.21% 0.25%
C 9229 7591 0 0 0.00% 0.00%
D 9229 7591 14 14 0.15% 0.18%

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 89924 486.48 896 875 183.0
A 0 226 8628 42.35 896 875 183.0
A 12 194 8196 39.99 896 875 183.0
B 4 81 78371 448.39 897 874 172.8
B 8 3 64493 368.09 897 874 172.8
B 0 214 57349 326.76 897 874 172.8
C 9 54 12980 59.07 875 877 204.9
C 13 61 6839 29.1 875 877 204.9
C 14 67 4135 15.9 875 877 204.9
D 2 63 113766 524.3 877 849 215.4
D 14 34 112553 518.67 877 849 215.4
D 12 221 79017 362.95 877 849 215.4

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