ASTROSAT CZTI

Data Quality Report

Orbit 20190204_A05_084T04_9000002694_level2

Creation date: 2019-02-05T10:25:50.471978
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/AS1A05_084T04_9000002694cztM0_level2_bc.evt modeM0/AS1A05_084T04_9000002694cztM0_level2_quad_clean.evt
Size (bytes)360,391,680130,654,080
Size343.7 MB 124.6 MB
Events in quadrant A1,727,658895,128
Events in quadrant B1,920,950887,167
Events in quadrant C1,655,783845,136
Events in quadrant D5,075,007790,267

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164430
B0171970
C0164050
D0276510

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7762811.043545%
B77621121.442927%
C7762881.133728%
D77626668.580263%

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 8911 7761 0 0 0.00% 0.00%
B 8911 7761 3 3 0.03% 0.04%
C 8911 7761 0 0 0.00% 0.00%
D 8912 7762 293 293 3.29% 3.77%

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 15 174 10383 102.88 444 437 96.7
A 0 8 5335 50.66 444 437 96.7
A 4 2 4326 40.23 444 437 96.7
B 7 220 68222 811.4 441 433 83.5
B 0 197 37605 444.93 441 433 83.5
B 5 172 30808 363.57 441 433 83.5
C 3 233 37825 376.99 415 413 99.2
C 5 218 11748 114.22 415 413 99.2
C 0 207 4888 45.09 415 413 99.2
D 7 238 1737407 17732.09 415 402 98.0
D 12 110 1164057 11879.09 415 402 98.0
D 11 176 244664 2493.53 415 402 98.0

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