ASTROSAT CZTI

Data Quality Report

Orbit 20171222_A04_130T04_9000001794_level2

Creation date: 2017-12-23T11:08:44.201871
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/AS1A04_130T04_9000001794cztM0_level2_bc.evt modeM0/AS1A04_130T04_9000001794cztM0_level2_quad_clean.evt
Size (bytes)869,408,640221,451,840
Size829.1 MB 211.2 MB
Events in quadrant A6,076,9821,341,932
Events in quadrant B8,117,1721,349,244
Events in quadrant C3,951,3081,395,781
Events in quadrant D6,892,5661,318,049

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03840
B03840
C03840
D03840

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0506450
B0584340
C0390190
D0504250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1887814397.622630%
B18878201610.679097%
C188781730.916411%
D188787163.792775%

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 22293 18875 34 34 0.15% 0.18%
B 22293 18875 18 18 0.08% 0.10%
C 22293 18875 0 0 0.00% 0.00%
D 22293 18875 66 66 0.30% 0.35%

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 13 248 1068714 4981.91 993 977 214.3
A 14 63 633060 2949.21 993 977 214.3
A 1 162 198554 921.87 993 977 214.3
B 4 239 3625499 19300.0 992 970 187.8
B 15 204 347834 1846.99 992 970 187.8
B 11 51 186655 988.74 992 970 187.8
C 8 208 12823 54.37 1002 991 217.6
C 13 61 6015 23.09 1002 991 217.6
C 12 4 5482 20.64 1002 991 217.6
D 1 52 1212837 5377.21 995 960 225.4
D 8 195 940138 4167.22 995 960 225.4
D 13 104 169021 745.7 995 960 225.4

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