ASTROSAT CZTI

Data Quality Report

Orbit 20151210_P01_999T99_9000000210_level2

Creation date: 2017-10-26T17:21:33.924089
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1P01_999T99_9000000210cztM0_level2.evt modeM0/AS1P01_999T99_9000000210cztM0_level2_quad_clean.evt
Size (bytes)229,124,16025,882,560
Size218.5 MB 24.7 MB
Events in quadrant A1,744,230174,088
Events in quadrant B1,810,825177,660
Events in quadrant C1,599,067166,882
Events in quadrant D1,693,520164,855

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A061270
B063310
C057010
D060010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1339181.344287%
B1339261.941748%
C133990.672143%
D1339100.746826%

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 1339 1339 83 83 6.20% 6.20%
B 1339 1339 96 96 7.17% 7.17%
C 1339 1339 60 60 4.48% 4.48%
D 1339 1339 77 77 5.75% 5.75%

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 11 79 2091 14.81 454 458 110.2
A 3 111 1547 9.88 454 458 110.2
A 13 9 1338 7.98 454 458 110.2
B 7 221 17034 147.83 459 461 112.1
B 14 53 14612 126.22 459 461 112.1
B 15 185 10933 93.41 459 461 112.1
C 15 241 62816 564.11 391 403 110.6
C 3 111 3496 27.96 391 403 110.6
C 3 143 2510 19.04 391 403 110.6
D 12 22 212683 1706.78 396 406 124.4
D 2 216 1410 8.07 396 406 124.4
D 13 169 1376 7.8 396 406 124.4

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