ASTROSAT CZTI

Data Quality Report

Orbit 20211110_A11_008T06_9000004762_level2

Creation date: 2021-11-15T11:00:07.938505
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/AS1A11_008T06_9000004762cztM0_level2_bc.evt modeM0/AS1A11_008T06_9000004762cztM0_level2_quad_clean.evt
Size (bytes)6,460,447,6801,127,396,160
Size6.0 GB 1.0 GB
Events in quadrant A18,608,7067,721,124
Events in quadrant B29,008,9157,424,060
Events in quadrant C34,572,3577,036,166
Events in quadrant D107,482,3315,906,762

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03160
B03160
C03160
D03160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018040
B018040
C018040
D018040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01794620
B02257870
C02596630
D04739050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A881951030.116787%
B8819545825.195306%
C8819586689.828222%
D881952936333.293271%

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 133224 88197 2 2 0.00% 0.00%
B 133224 88192 183 183 0.14% 0.21%
C 133224 88182 467 467 0.35% 0.53%
D 133224 88173 16501 16501 12.39% 18.71%

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 15 169 183552 175.15 4677 4602 1021.7
A 13 254 155107 147.31 4677 4602 1021.7
A 13 6 135280 127.9 4677 4602 1021.7
B 5 172 7360716 8181.95 4573 4482 899.1
B 0 189 1137279 1259.95 4573 4482 899.1
B 5 200 620687 685.37 4573 4482 899.1
C 8 111 8941001 9071.89 4320 4297 985.1
C 7 221 3410730 3457.96 4320 4297 985.1
C 0 10 1917456 1942.1 4320 4297 985.1
D 7 223 58449167 58164.87 3977 3883 1004.8
D 8 195 14277495 14205.13 3977 3883 1004.8
D 12 218 5377052 5347.39 3977 3883 1004.8

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