ASTROSAT CZTI

Data Quality Report

Orbit 20170717_A03_114T01_9000001390_level2

Creation date: 2017-09-24T11:27:34.290685
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/AS1A03_114T01_9000001390cztM0_level2.evt modeM0/AS1A03_114T01_9000001390cztM0_level2_quad_clean.evt
Size (bytes)320,794,56059,616,000
Size305.9 MB 56.9 MB
Events in quadrant A2,304,943367,498
Events in quadrant B2,339,013378,370
Events in quadrant C2,261,690364,415
Events in quadrant D2,467,935343,588

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0102010
B0102580
C0101910
D0109620

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5009170.339389%
B5009210.419245%
C5009150.299461%
D5009951.896586%

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 6104 5010 0 0 0.00% 0.00%
B 6104 5010 0 0 0.00% 0.00%
C 6104 5010 0 0 0.00% 0.00%
D 6104 5010 82 82 1.34% 1.64%

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 14 111 6554 49.29 595 583 121.1
A 0 226 5331 39.2 595 583 121.1
A 13 251 5051 36.89 595 583 121.1
B 12 111 13631 113.2 599 587 115.2
B 11 111 11166 91.81 599 587 115.2
B 14 111 9149 74.3 599 587 115.2
C 13 61 4332 27.83 578 580 134.8
C 8 222 2726 15.92 578 580 134.8
C 9 237 1841 9.35 578 580 134.8
D 13 137 161262 1093.93 564 554 146.9
D 1 52 118850 805.24 564 554 146.9
D 2 234 15104 99.04 564 554 146.9

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