ASTROSAT CZTI

Data Quality Report

Orbit 20160226_G02_018T08_9000000346_level2

Creation date: 2017-10-27T04:15:33.013625
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/AS1G02_018T08_9000000346cztM0_level2.evt modeM0/AS1G02_018T08_9000000346cztM0_level2_quad_clean.evt
Size (bytes)9,235,226,8801,704,168,000
Size8.6 GB 1.6 GB
Events in quadrant A63,498,06410,492,155
Events in quadrant B65,589,59810,699,730
Events in quadrant C65,828,87510,598,634
Events in quadrant D75,325,74410,237,947

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A027900
B028070
C028080
D028020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02887400
B02922380
C02927270
D03287560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B1230
C1230
D110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13997815091.078027%
B13995618021.287548%
C13990412340.882033%
D13996238672.762893%

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 177879 140597 2 2 0.00% 0.00%
B 177879 140565 246 246 0.14% 0.18%
C 177879 140534 58 58 0.03% 0.04%
D 177879 140561 2398 2398 1.35% 1.71%

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 3 1 307382 87.83 16334 15980 3317.9
A 0 8 185656 51.14 16334 15980 3317.9
A 12 194 185377 51.06 16334 15980 3317.9
B 7 205 608612 187.76 16590 16179 3155.3
B 8 3 531555 163.34 16590 16179 3155.3
B 12 111 236055 69.68 16590 16179 3155.3
C 5 234 1985576 530.58 15953 16008 3712.1
C 2 53 668612 175.8 15953 16008 3712.1
C 0 64 154958 37.43 15953 16008 3712.1
D 10 172 6791233 1819.37 15707 15311 3724.3
D 9 66 3638686 972.9 15707 15311 3724.3
D 12 126 2815112 751.76 15707 15311 3724.3

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