ASTROSAT CZTI

Data Quality Report

Orbit 20160325_P01_010T01_9000000398_level2

Creation date: 2016-09-06T17:51:43.024066
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/AS1P01_010T01_9000000398cztM0_level2_bc.evt modeM0/AS1P01_010T01_9000000398cztM0_level2_quad_clean.evt
Size (bytes)6,015,404,1602,432,462,400
Size5.6 GB 2.3 GB
Events in quadrant A30,956,52415,969,299
Events in quadrant B31,888,24416,076,000
Events in quadrant C63,745,21615,237,699
Events in quadrant D44,389,27215,130,946

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A033380
B033380
C033380
D033380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02370
B02370
C02370
D02380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03354500
B03380560
C04927830
D03797840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16442216280.990135%
B16442217581.069200%
C164400118737.222019%
D16442036642.228439%

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 201666 164426 0 0 0.00% 0.00%
B 201666 164427 26 26 0.01% 0.02%
C 201666 164404 124 124 0.06% 0.08%
D 201666 164423 520 520 0.26% 0.32%

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 14 63 360724 208.06 7790 7620 1697.1
A 8 15 202241 114.68 7790 7620 1697.1
A 8 176 120109 66.28 7790 7620 1697.1
B 10 244 314726 215.32 7884 7633 1426.2
B 14 167 293116 200.17 7884 7633 1426.2
B 15 85 261464 177.98 7884 7633 1426.2
C 9 70 32568924 20057.27 7399 7276 1623.4
C 2 53 766501 467.67 7399 7276 1623.4
C 14 223 343545 207.13 7399 7276 1623.4
D 2 184 6462865 3723.84 7516 7295 1733.6
D 13 169 1485548 852.72 7516 7295 1733.6
D 13 223 1128712 646.88 7516 7295 1733.6

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