ASTROSAT CZTI

Data Quality Report

Orbit 20160713_G05_256T01_9000000538_level2

Creation date: 2017-10-31T18:07:23.381175
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/AS1G05_256T01_9000000538cztM0_level2.evt modeM0/AS1G05_256T01_9000000538cztM0_level2_quad_clean.evt
Size (bytes)5,350,127,040919,437,120
Size5.0 GB 876.8 MB
Events in quadrant A31,450,5546,296,317
Events in quadrant B31,396,6826,267,154
Events in quadrant C49,439,4605,575,789
Events in quadrant D45,990,5415,877,900

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0650
B0650
C0650
D0650

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01337050
B01324770
C01875770
D01773580

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011360
B011380
C011380
D011380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5574720263.634276%
B5575815752.824707%
C557511095119.642697%
D55751583610.467974%

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 62516 55808 1352 1352 2.16% 2.42%
B 62516 55814 940 940 1.50% 1.68%
C 62515 55807 9739 9739 15.58% 17.45%
D 62516 55812 4368 4368 6.99% 7.83%

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 0 199 4280829 3472.35 6117 5991 1231.1
A 15 234 1927166 1560.52 6117 5991 1231.1
A 0 226 475180 381.11 6117 5991 1231.1
B 14 167 4601206 3969.17 6179 6030 1157.7
B 10 16 1307621 1124.27 6179 6030 1157.7
B 4 48 291406 246.5 6179 6030 1157.7
C 9 144 27374238 21900.38 5449 5456 1249.7
C 9 247 619374 491.25 5449 5456 1249.7
C 10 65 70199 51.81 5449 5456 1249.7
D 2 232 18055144 13144.08 5781 5613 1373.2
D 13 53 1175765 852.13 5781 5613 1373.2
D 2 136 934925 676.75 5781 5613 1373.2

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