ASTROSAT CZTI

Data Quality Report

Orbit 20171025_T01_200T01_9000001638_level2

Creation date: 2017-10-28T09:48:15.123869
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_200T01_9000001638cztM0_level2.evt modeM0/AS1T01_200T01_9000001638cztM0_level2_quad_clean.evt
Size (bytes)10,480,714,5602,044,823,040
Size9.8 GB 1.9 GB
Events in quadrant A104,993,47712,971,578
Events in quadrant B65,157,04413,963,869
Events in quadrant C56,002,65414,021,685
Events in quadrant D83,498,67613,067,757

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03908970
B02717230
C02504160
D03260480

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A023520
B023520
C023520
D023520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1153961448512.552428%
B11539637043.209817%
C11539621911.898679%
D11539665515.676973%

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 130396 115420 9192 9192 7.05% 7.96%
B 130396 115420 1254 1254 0.96% 1.09%
C 130396 115421 954 954 0.73% 0.83%
D 130396 115421 4533 4533 3.48% 3.93%

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 33364325 13216.97 12525 12234 2523.4
A 14 238 15255726 6040.78 12525 12234 2523.4
A 15 174 5742492 2270.82 12525 12234 2523.4
B 4 239 9509589 3876.07 13152 12803 2450.1
B 10 244 1211210 489.12 13152 12803 2450.1
B 15 204 990625 399.09 13152 12803 2450.1
C 4 254 5465968 1843.69 12874 12909 2957.7
C 1 3 139354 42.75 12874 12909 2957.7
C 7 238 111284 33.26 12874 12909 2957.7
D 1 52 12348109 4092.27 12582 12225 3014.4
D 8 195 8484636 2810.62 12582 12225 3014.4
D 10 253 2849742 941.31 12582 12225 3014.4

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