ASTROSAT CZTI

Data Quality Report

Orbit 20190108_T03_070T01_9000002632_level2

Creation date: 2024-11-14T16:50:49.284026
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/AS1T03_070T01_9000002632cztM0_level2.fits modeM0/AS1T03_070T01_9000002632cztM0_level2_quad_clean.evt
Size (bytes)91,244,16076,340,160
Size87.0 MB 72.8 MB
Events in quadrant A547,230424,999
Events in quadrant B523,314421,262
Events in quadrant C535,174405,814
Events in quadrant D468,210369,936

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210290
B0216740
C0206320
D0231430

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02020
B02020
C02020
D02020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A99463963.981500%
B99464224.242912%
C99463723.740197%
D99464254.273075%

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 10346 9944 0 0 0.00% 0.00%
B 10346 9945 0 0 0.00% 0.00%
C 10346 9946 0 0 0.00% 0.00%
D 10346 9946 0 0 0.00% 0.00%

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 29 510 9.85 142 133 38.3
A 7 110 486 9.22 142 133 38.3
A 9 19 429 7.73 142 133 38.3
B 2 9 437 10.28 138 132 29.7
B 3 17 370 8.02 138 132 29.7
B 2 8 357 7.59 138 132 29.7
C 9 233 388 6.79 141 131 37.8
C 12 241 384 6.69 141 131 37.8
C 1 80 380 6.58 141 131 37.8
D 3 14 342 5.86 133 121 37.7
D 3 31 339 5.78 133 121 37.7
D 1 19 334 5.65 133 121 37.7

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