ASTROSAT CZTI

Data Quality Report

Orbit 20170709_A03_077T01_9000001372_level2

Creation date: 2019-03-08T17:24:04.897254
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/AS1A03_077T01_9000001372cztM0_level2_bc.evt modeM0/AS1A03_077T01_9000001372cztM0_level2_quad_clean.evt
Size (bytes)4,031,893,4401,479,009,600
Size3.8 GB 1.4 GB
Events in quadrant A23,894,6059,330,265
Events in quadrant B25,767,5689,367,941
Events in quadrant C23,379,1339,290,050
Events in quadrant D41,012,8328,717,857

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02080
B02080
C02090
D02130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A024300
B024150
C024160
D024190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02432510
B02481190
C02418200
D02953370

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11823710100.854217%
B11808911750.995012%
C1182097210.609937%
D11714836553.119985%

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 160910 125458 6 6 0.00% 0.00%
B 160908 125300 12 12 0.01% 0.01%
C 160910 125359 0 0 0.00% 0.00%
D 160910 124398 1073 1073 0.67% 0.86%

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 199694 145.85 6052 5925 1328.6
A 7 223 114615 81.81 6052 5925 1328.6
A 14 111 91094 64.11 6052 5925 1328.6
B 0 214 955792 823.06 6097 5926 1154.1
B 0 219 412330 352.15 6097 5926 1154.1
B 0 229 319669 271.86 6097 5926 1154.1
C 14 234 56234 38.98 5933 5854 1292.5
C 14 67 36991 24.09 5933 5854 1292.5
C 13 61 36833 23.97 5933 5854 1292.5
D 1 52 6668024 4932.01 5806 5632 1350.8
D 8 195 5289049 3911.19 5806 5632 1350.8
D 7 71 2826395 2088.14 5806 5632 1350.8

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