ASTROSAT CZTI

Data Quality Report

Orbit 20190421_A05_088T02_9000002850_level2

Creation date: 2019-04-22T12:31:42.098131
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/AS1A05_088T02_9000002850cztM0_level2_bc.evt modeM0/AS1A05_088T02_9000002850cztM0_level2_quad_clean.evt
Size (bytes)1,091,885,760474,315,840
Size1.0 GB 452.3 MB
Events in quadrant A7,418,2133,043,407
Events in quadrant B7,402,0583,127,212
Events in quadrant C7,920,1683,062,393
Events in quadrant D8,195,1622,989,276

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0680930
B0682670
C0707030
D0698050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06380
B06380
C06380
D06380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0850
B0850
C0850
D0850

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A312174271.367844%
B312175081.627318%
C312178372.681231%
D312174761.524810%

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 39632 31212 2 2 0.01% 0.01%
B 39632 31213 1 1 0.00% 0.00%
C 39632 31211 15 15 0.04% 0.05%
D 39632 31213 17 17 0.04% 0.05%

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 8 205 224680 574.99 1839 1807 387.6
A 3 1 43782 108.29 1839 1807 387.6
A 9 143 43058 106.42 1839 1807 387.6
B 0 229 69659 199.17 1873 1833 340.5
B 0 230 39058 109.31 1873 1833 340.5
B 0 190 35166 97.88 1873 1833 340.5
C 3 247 493714 1175.98 1819 1817 418.3
C 3 233 407676 970.29 1819 1817 418.3
C 9 54 30428 68.4 1819 1817 418.3
D 1 52 542320 1315.83 1847 1790 410.8
D 10 66 370187 896.8 1847 1790 410.8
D 2 234 132220 317.51 1847 1790 410.8

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