ASTROSAT CZTI

Data Quality Report

Orbit 20190204_T03_035T01_9000002696_level2

Creation date: 2019-02-05T10:27:46.382779
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/AS1T03_035T01_9000002696cztM0_level2_bc.evt modeM0/AS1T03_035T01_9000002696cztM0_level2_quad_clean.evt
Size (bytes)543,614,400185,091,840
Size518.4 MB 176.5 MB
Events in quadrant A3,206,8841,153,717
Events in quadrant B3,189,5621,184,544
Events in quadrant C2,884,8521,147,419
Events in quadrant D6,183,1011,115,087

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0315470
B0311680
C0303380
D0410280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02960
B02960
C02960
D02960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A145663002.059591%
B145663032.080187%
C145662952.025264%
D145664843.322807%

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 15896 14566 20 20 0.13% 0.14%
B 15896 14566 2 2 0.01% 0.01%
C 15896 14566 0 0 0.00% 0.00%
D 15896 14566 57 57 0.36% 0.39%

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 220441 1303.23 761 745 168.6
A 4 2 51828 303.02 761 745 168.6
A 0 8 7065 37.49 761 745 168.6
B 0 189 42186 275.04 772 752 150.6
B 6 36 41956 273.51 772 752 150.6
B 7 220 41144 268.12 772 752 150.6
C 3 233 25814 142.81 737 729 175.7
C 5 218 19678 107.88 737 729 175.7
C 0 207 5190 25.4 737 729 175.7
D 7 238 2652150 14833.0 751 720 178.8
D 12 110 209018 1165.29 751 720 178.8
D 11 176 171919 957.75 751 720 178.8

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