ASTROSAT CZTI

Data Quality Report

Orbit 20170530_G07_027T01_9000001258_level2

Creation date: 2017-09-24T01:39:18.370077
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/AS1G07_027T01_9000001258cztM0_level2.evt modeM0/AS1G07_027T01_9000001258cztM0_level2_quad_clean.evt
Size (bytes)1,427,486,400274,654,080
Size1.3 GB 261.9 MB
Events in quadrant A10,975,9761,742,648
Events in quadrant B10,057,1751,766,158
Events in quadrant C9,402,7921,733,701
Events in quadrant D11,404,1021,659,187

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0455890
B0434350
C0422350
D0485230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04200
B04160
C04180
D04160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A205851180.573233%
B205871530.743187%
C20580580.281827%
D205803401.652089%

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 25643 20895 16 16 0.06% 0.08%
B 25643 20908 25 25 0.10% 0.12%
C 25643 20907 6 6 0.02% 0.03%
D 25643 20900 245 245 0.96% 1.17%

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 928726 1866.93 2475 2433 496.2
A 1 162 174912 347.63 2475 2433 496.2
A 3 1 118548 234.03 2475 2433 496.2
B 6 51 73200 151.91 2486 2434 465.9
B 10 245 63304 130.66 2486 2434 465.9
B 12 111 49896 101.88 2486 2434 465.9
C 14 234 61434 107.62 2390 2415 548.4
C 3 254 23189 37.88 2390 2415 548.4
C 13 61 18010 28.44 2390 2415 548.4
D 6 225 901476 1556.06 2358 2303 577.9
D 2 14 837740 1445.76 2358 2303 577.9
D 7 71 225070 385.51 2358 2303 577.9

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