ASTROSAT CZTI

Data Quality Report

Orbit 20160201_T01_052T01_9000000308_level2

Creation date: 2018-05-16T23:27:18.300150
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_052T01_9000000308cztM0_level2.evt modeM0/AS1T01_052T01_9000000308cztM0_level2_quad_clean.evt
Size (bytes)13,947,791,040981,169,920
Size13.0 GB 935.7 MB
Events in quadrant A119,057,4536,008,261
Events in quadrant B104,840,6496,176,891
Events in quadrant C97,998,3666,050,294
Events in quadrant D95,101,3555,832,510

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B1130
C1130
D110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04119940
B03699550
C03496510
D03412360

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016480
B016480
C016480
D016480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8244814361.741704%
B824547860.953259%
C824527370.893853%
D824539271.124277%

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 112511 82470 7488 7488 6.66% 9.08%
B 112511 82473 4303 4303 3.82% 5.22%
C 112511 82473 3565 3565 3.17% 4.32%
D 112511 82474 3812 3812 3.39% 4.62%

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 0 231 14755317 2325.71 26283 26488 6333.0
A 0 128 3747819 587.61 26283 26488 6333.0
A 13 170 120401 14.83 26283 26488 6333.0
B 5 200 267369 37.28 27411 27558 6432.7
B 8 3 246688 34.07 27411 27558 6432.7
B 3 0 167799 21.8 27411 27558 6432.7
C 2 53 985343 138.85 24753 25627 6912.0
C 9 236 145824 17.39 24753 25627 6912.0
C 14 223 127200 14.7 24753 25627 6912.0
D 1 83 1394916 182.34 24176 25127 7512.1
D 9 66 534650 67.83 24176 25127 7512.1
D 13 53 480877 60.67 24176 25127 7512.1

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