ASTROSAT CZTI

Data Quality Report

Orbit 20180928_T02_112T01_9000002390_level2

Creation date: 2018-10-04T16:38:47.391436
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/AS1T02_112T01_9000002390cztM0_level2_bc.evt modeM0/AS1T02_112T01_9000002390cztM0_level2_quad_clean.evt
Size (bytes)8,893,238,4003,156,454,080
Size8.3 GB 2.9 GB
Events in quadrant A65,470,01919,976,594
Events in quadrant B69,236,18920,200,408
Events in quadrant C54,033,50520,054,386
Events in quadrant D64,956,12119,637,724

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A046860
B046860
C046860
D046860

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03560
B03560
C03560
D03570

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05494610
B05584110
C05012820
D05295710

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A22980281043.526514%
B22980769803.037331%
C22980937871.647890%
D22980745471.978617%

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 267552 229808 552 552 0.21% 0.24%
B 267552 229806 549 549 0.21% 0.24%
C 267552 229825 17 17 0.01% 0.01%
D 267552 229820 689 689 0.26% 0.30%

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 15 174 14030600 5259.99 12416 12236 2665.1
A 0 253 925854 342.81 12416 12236 2665.1
A 9 143 734492 271.01 12416 12236 2665.1
B 3 112 6346431 2715.89 12542 12256 2332.3
B 7 220 2930701 1251.33 12542 12256 2332.3
B 0 198 1660903 706.89 12542 12256 2332.3
C 3 233 5550976 1961.79 12143 12120 2823.4
C 0 207 1278179 448.42 12143 12120 2823.4
C 7 247 444060 152.99 12143 12120 2823.4
D 1 52 12231718 4270.03 12406 12009 2861.7
D 15 0 1712115 594.08 12406 12009 2861.7
D 2 234 906521 312.58 12406 12009 2861.7

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