ASTROSAT CZTI

Data Quality Report

Orbit 20151220_G04_003T02_9000000224_level2

Creation date: 2016-09-06T17:56:19.328111
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/AS1G04_003T02_9000000224cztM0_level2_bc.evt modeM0/AS1G04_003T02_9000000224cztM0_level2_quad_clean.evt
Size (bytes)1,006,329,600448,824,960
Size959.7 MB 428.0 MB
Events in quadrant A5,478,5912,981,379
Events in quadrant B6,046,6232,995,336
Events in quadrant C6,739,8762,871,421
Events in quadrant D10,221,5502,744,869

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05900
B05900
C05900
D05900

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01239160
B01282310
C01226010
D01284200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0520
C0520
D0520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A291301740.597322%
B291301860.638517%
C291301090.374185%
D2912815275.242378%

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 34206 29128 14 14 0.04% 0.05%
B 34206 29130 7 7 0.02% 0.02%
C 34206 29129 8 8 0.02% 0.03%
D 34206 29128 885 885 2.59% 3.04%

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 3 80 143940 521.48 1314 1289 273.5
A 12 133 124454 450.25 1314 1289 273.5
A 12 243 90187 324.98 1314 1289 273.5
B 5 191 276031 1148.06 1340 1303 239.3
B 15 22 158865 658.43 1340 1303 239.3
B 6 53 139528 577.63 1340 1303 239.3
C 15 241 1474432 5627.57 1263 1242 261.8
C 3 79 87395 329.1 1263 1242 261.8
C 10 19 84261 317.13 1263 1242 261.8
D 12 22 4330214 16339.41 1239 1205 264.9
D 1 239 400871 1508.5 1239 1205 264.9
D 6 6 304492 1144.73 1239 1205 264.9

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