ASTROSAT CZTI

Data Quality Report

Orbit 20180306_T02_012T03_9000001950_level2

Creation date: 2018-07-04T15:39:24.658163
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/AS1T02_012T03_9000001950cztM0_level2_bc.evt modeM0/AS1T02_012T03_9000001950cztM0_level2_quad_clean.evt
Size (bytes)156,761,28046,607,040
Size149.5 MB 44.4 MB
Events in quadrant A870,727286,625
Events in quadrant B1,305,561279,845
Events in quadrant C800,583286,478
Events in quadrant D1,480,661266,328

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A086300
B0104210
C084390
D0113830

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0840
B0840
C0840
D0840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4140300.724638%
B41402405.797101%
C4140150.362319%
D41401874.516908%

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 5026 4141 6 6 0.12% 0.14%
B 5026 4135 23 23 0.46% 0.56%
C 5026 4141 0 0 0.00% 0.00%
D 5026 4141 21 21 0.42% 0.51%

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 4 2 38923 814.28 204 198 47.6
A 12 189 28736 600.07 204 198 47.6
A 1 162 8500 174.56 204 198 47.6
B 4 239 326023 7859.06 202 196 41.5
B 3 64 79696 1917.57 202 196 41.5
B 0 189 48796 1172.25 202 196 41.5
C 0 207 7316 149.31 202 199 47.7
C 13 61 1253 22.11 202 199 47.7
C 15 208 970 16.18 202 199 47.7
D 13 122 360684 7379.48 199 191 48.9
D 1 52 180789 3696.93 199 191 48.9
D 10 157 100780 2059.11 199 191 48.9

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