ASTROSAT CZTI

Data Quality Report

Orbit 20220509_A10_058T14_9000005134_level2

Creation date: 2022-06-13T15:38:29.293426
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/AS1A10_058T14_9000005134cztM0_level2.evt modeM0/AS1A10_058T14_9000005134cztM0_level2_quad_clean.evt
Size (bytes)5,325,206,400845,539,200
Size5.0 GB 806.4 MB
Events in quadrant A33,345,1415,528,823
Events in quadrant B38,371,6325,507,914
Events in quadrant C34,151,2865,339,177
Events in quadrant D51,187,4804,932,149

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012160
B012160
C012160
D012160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02270
B02270
C02270
D02280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01398220
B01541680
C01392740
D01943310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A629451130.179522%
B6294520113.194853%
C629457961.264596%
D6294551648.203988%

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 87000 62959 44 44 0.05% 0.07%
B 87000 62959 1420 1420 1.63% 2.26%
C 87000 62958 710 710 0.82% 1.13%
D 87000 62958 5477 5477 6.30% 8.70%

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 15 223 2459993 1655.57 7454 7321 1481.5
A 10 83 1451879 975.09 7454 7321 1481.5
A 15 169 432409 286.94 7454 7321 1481.5
B 5 172 5622137 4083.05 7307 7123 1375.2
B 5 255 1566688 1134.06 7307 7123 1375.2
B 0 213 675600 486.09 7307 7123 1375.2
C 15 214 2584244 1589.15 7103 7157 1621.7
C 1 23 2132514 1310.6 7103 7157 1621.7
C 0 10 1166009 714.6 7103 7157 1621.7
D 1 52 13184259 7687.53 7009 6823 1714.1
D 7 80 2793539 1625.73 7009 6823 1714.1
D 13 249 2790777 1624.12 7009 6823 1714.1

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