ASTROSAT CZTI

Data Quality Report

Orbit 20181221_A05_198T01_9000002586_level2

Creation date: 2018-12-22T10:58:56.719469
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_198T01_9000002586cztM0_level2_bc.evt modeM0/AS1A05_198T01_9000002586cztM0_level2_quad_clean.evt
Size (bytes)1,126,725,120378,270,720
Size1.0 GB 360.7 MB
Events in quadrant A7,321,3552,368,511
Events in quadrant B6,902,2722,402,315
Events in quadrant C6,260,8972,315,120
Events in quadrant D11,516,0852,235,540

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0689220
B0664460
C0636560
D0844780

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06320
B06320
C06320
D06320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A310705701.834567%
B310703421.100740%
C310703141.010621%
D3107014654.715159%

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 33150 31073 13 13 0.04% 0.04%
B 33150 31070 0 0 0.00% 0.00%
C 33150 31072 0 0 0.00% 0.00%
D 33150 31072 85 85 0.26% 0.27%

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 1301360 3767.88 1557 1521 345.0
A 13 210 13777 35.53 1557 1521 345.0
A 15 191 11451 28.78 1557 1521 345.0
B 7 220 122023 400.43 1573 1530 300.9
B 0 230 106417 348.56 1573 1530 300.9
B 0 197 94744 309.77 1573 1530 300.9
C 5 218 317146 891.58 1504 1491 354.0
C 5 219 73505 203.41 1504 1491 354.0
C 5 37 30070 80.72 1504 1491 354.0
D 7 238 1949009 5460.24 1514 1457 356.7
D 10 70 1778817 4983.09 1514 1457 356.7
D 13 189 951399 2663.3 1514 1457 356.7

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