ASTROSAT CZTI

Data Quality Report

Orbit 20171106_G08_066T01_9000001668_level2

Creation date: 2018-01-08T19:47:17.459855
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/AS1G08_066T01_9000001668cztM0_level2_bc.evt modeM0/AS1G08_066T01_9000001668cztM0_level2_quad_clean.evt
Size (bytes)1,604,499,840541,739,520
Size1.5 GB 516.6 MB
Events in quadrant A9,772,1643,412,673
Events in quadrant B15,473,0453,326,208
Events in quadrant C8,615,7563,357,047
Events in quadrant D11,638,0623,200,940

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0965460
B01208100
C0928190
D01033860

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09260
B09260
C09260
D09260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0580
B0580
C0580
D0580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A453125461.204979%
B4531228136.208069%
C453122620.578213%
D4531210382.290784%

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 51239 45315 11 11 0.02% 0.02%
B 51239 45314 61 61 0.12% 0.13%
C 51239 45314 0 0 0.00% 0.00%
D 51239 45312 109 109 0.21% 0.24%

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 8 5 813118 1626.12 2250 2200 498.7
A 11 29 135921 268.15 2250 2200 498.7
A 1 162 81951 159.92 2250 2200 498.7
B 4 239 5706436 13310.02 2230 2165 428.6
B 3 189 422073 979.79 2230 2165 428.6
B 3 64 210626 486.41 2230 2165 428.6
C 14 234 25707 48.62 2198 2162 484.3
C 13 61 12954 22.28 2198 2162 484.3
C 7 247 6333 8.61 2198 2162 484.3
D 10 253 836880 1654.71 2179 2099 504.5
D 13 152 795202 1572.1 2179 2099 504.5
D 2 120 341180 672.13 2179 2099 504.5

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