ASTROSAT CZTI

Data Quality Report

Orbit 20171116_T01_206T01_9000001694_level2

Creation date: 2018-01-09T05:02:16.036953
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/AS1T01_206T01_9000001694cztM0_level2_bc.evt modeM0/AS1T01_206T01_9000001694cztM0_level2_quad_clean.evt
Size (bytes)1,855,748,160430,657,920
Size1.7 GB 410.7 MB
Events in quadrant A14,277,4682,780,178
Events in quadrant B12,147,7922,786,439
Events in quadrant C7,231,8342,755,923
Events in quadrant D20,207,0132,364,744

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07000
B07000
C07000
D07000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01032130
B0925830
C0706740
D01361140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0700
B0700
C0700
D0700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3426919145.585223%
B3426920065.853687%
C342692790.814147%
D34269816723.832035%

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 41290 34268 121 121 0.29% 0.35%
B 41290 34271 8 8 0.02% 0.02%
C 41290 34270 0 0 0.00% 0.00%
D 41290 34267 417 417 1.01% 1.22%

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 8 5 6169244 14778.57 1894 1868 417.3
A 1 162 366407 873.53 1894 1868 417.3
A 9 143 235063 558.79 1894 1868 417.3
B 4 239 3582683 9707.56 1893 1859 368.9
B 3 64 482949 1304.23 1893 1859 368.9
B 15 204 334104 900.71 1893 1859 368.9
C 13 61 11118 22.6 1849 1834 410.7
C 14 234 8164 15.41 1849 1834 410.7
C 13 250 5409 8.7 1849 1834 410.7
D 13 137 6951134 17926.66 1653 1598 387.7
D 1 52 5300151 13667.87 1653 1598 387.7
D 2 120 1127252 2903.68 1653 1598 387.7

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