ASTROSAT CZTI

Data Quality Report

Orbit 45049

Creation date: 2024-06-27T23:09:22.761757
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/AS1A13_020T01_9000006040_45049cztM0_level2.fits modeM0/AS1A13_020T01_9000006040_45049cztM0_level2_quad_clean.evt
Size (bytes)1,525,121,280300,481,920
Size1.4 GB 286.6 MB
Events in quadrant A15,271,3852,004,147
Events in quadrant B10,766,7942,038,564
Events in quadrant C10,047,8661,996,147
Events in quadrant D18,881,6151,729,424

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03960
B03960
C03960
D03960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0603504
B0452874
C0435564
D0696624

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A192773621.877886%
B192786673.459902%
C192783771.955597%
D1927814887.718643%

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 21837 19282 36 36 0.16% 0.19%
B 21838 19283 301 301 1.38% 1.56%
C 21838 19283 232 232 1.06% 1.20%
D 21838 19283 1001 1001 4.58% 5.19%

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 10 83 6668543 14869.08 2155 2107 448.3
A 15 174 105408 230.41 2155 2107 448.3
A 7 3 71806 155.46 2155 2107 448.3
B 4 171 848498 2015.3 2142 2075 420.0
B 0 186 273857 647.1 2142 2075 420.0
B 0 190 205623 484.64 2142 2075 420.0
C 14 254 1324409 2656.45 2125 2136 497.8
C 15 208 224503 446.74 2125 2136 497.8
C 12 250 105351 207.36 2125 2136 497.8
D 13 174 5345558 10278.76 2068 2009 519.9
D 13 249 1342622 2578.78 2068 2009 519.9
D 11 241 1268806 2436.79 2068 2009 519.9

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