ASTROSAT CZTI

Data Quality Report

Orbit 20151024_P01_888T88_9000000064_level2

Creation date: 2016-09-06T17:59:49.922642
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/AS1P01_888T88_9000000064cztM0_level2_bc.evt modeM0/AS1P01_888T88_9000000064cztM0_level2_quad_clean.evt
Size (bytes)660,798,720250,323,840
Size630.2 MB 238.7 MB
Events in quadrant A3,841,5331,642,862
Events in quadrant B3,719,6621,648,808
Events in quadrant C3,326,8181,631,974
Events in quadrant D7,998,4141,524,449

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0713870
B0701920
C0662550
D0843200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0830
B0830
C0830
D0830

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03360
B03360
C03360
D03360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16443360.218938%
B16443340.206775%
C16443380.231101%
D1644312807.784468%

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 24704 16444 13 13 0.05% 0.08%
B 24704 16443 4 4 0.02% 0.02%
C 24704 16444 18 18 0.07% 0.11%
D 24704 16435 80 80 0.32% 0.49%

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 0 238 501981 3198.78 749 737 156.7
A 8 192 105657 669.57 749 737 156.7
A 15 200 71288 450.23 749 737 156.7
B 4 82 180899 1341.04 761 741 134.3
B 0 182 82455 608.25 761 741 134.3
B 0 153 57873 425.27 761 741 134.3
C 3 159 219117 1389.75 737 728 157.1
C 2 53 73200 461.19 737 728 157.1
C 5 234 62439 392.71 737 728 157.1
D 13 7 3709040 23294.16 708 691 159.2
D 1 5 253915 1590.64 708 691 159.2
D 13 51 225997 1415.27 708 691 159.2

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