ASTROSAT CZTI

Data Quality Report

Orbit 20210727_A10_053T39_9000004596_level2

Creation date: 2021-07-28T17:10:28.436171
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1A10_053T39_9000004596cztM0_level2_bc.evt modeM0/AS1A10_053T39_9000004596cztM0_level2_quad_clean.evt
Size (bytes)891,866,880275,921,280
Size850.6 MB 263.1 MB
Events in quadrant A5,177,7731,793,146
Events in quadrant B8,311,2121,882,106
Events in quadrant C6,093,8241,814,581
Events in quadrant D6,329,6221,758,328

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03280
B03280
C03280
D03280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0370

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0412930
B0496270
C0447000
D0419400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A160849105.657797%
B160822331.448825%
C160845763.581199%
D160833582.225953%

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 19829 16074 41 41 0.21% 0.26%
B 19829 16082 0 0 0.00% 0.00%
C 19829 16082 2 2 0.01% 0.01%
D 19829 16083 124 124 0.63% 0.77%

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 0 13 1630265 8323.99 919 906 195.7
A 13 254 26450 130.5 919 906 195.7
A 0 226 5692 24.45 919 906 195.7
B 6 159 4358355 24338.02 960 940 179.0
B 4 80 153744 853.48 960 940 179.0
B 0 190 44795 244.95 960 940 179.0
C 3 233 2405741 11097.01 922 924 216.7
C 4 175 53973 244.79 922 924 216.7
C 0 10 31216 139.78 922 924 216.7
D 8 195 1608041 7758.68 931 905 207.1
D 11 176 771063 3718.05 931 905 207.1
D 2 250 146610 703.41 931 905 207.1

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