ASTROSAT CZTI

Data Quality Report

Orbit 20200314_A07_069T01_9000003570_level2

Creation date: 2020-03-17T12:24:10.917843
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/AS1A07_069T01_9000003570cztM0_level2_bc.evt modeM0/AS1A07_069T01_9000003570cztM0_level2_quad_clean.evt
Size (bytes)4,406,644,8001,269,478,080
Size4.1 GB 1.2 GB
Events in quadrant A23,012,3478,236,722
Events in quadrant B28,844,7628,221,198
Events in quadrant C23,715,5317,818,453
Events in quadrant D50,933,9867,178,175

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020740
B020740
C020740
D020740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02163570
B02373810
C02215150
D03268540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01840
B01840
C01840
D01840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10205713351.308093%
B10205746794.584693%
C10205721692.125283%
D1020571337013.100522%

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 120253 102051 4 4 0.00% 0.00%
B 120253 102049 1909 1909 1.59% 1.87%
C 120253 102052 129 129 0.11% 0.13%
D 120253 102034 2598 2598 2.16% 2.55%

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 6 16 329013 260.72 5833 5741 1239.9
A 13 254 161500 125.62 5833 5741 1239.9
A 3 1 100200 76.18 5833 5741 1239.9
B 4 200 5325323 4959.12 5813 5690 1072.7
B 0 245 443896 408.51 5813 5690 1072.7
B 0 189 173573 156.51 5813 5690 1072.7
C 0 239 876601 683.05 5493 5483 1275.3
C 10 91 754398 587.23 5493 5483 1275.3
C 2 16 527130 409.03 5493 5483 1275.3
D 7 238 25259624 20660.51 5308 5126 1222.4
D 8 195 2756191 2250.63 5308 5126 1222.4
D 1 52 1754147 1430.86 5308 5126 1222.4

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