ASTROSAT CZTI

Data Quality Report

Orbit 20170217_G06_076T01_9000001038_level2

Creation date: 2017-09-23T05:05:04.119932
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/AS1G06_076T01_9000001038cztM0_level2.evt modeM0/AS1G06_076T01_9000001038cztM0_level2_quad_clean.evt
Size (bytes)8,148,470,4001,595,352,960
Size7.6 GB 1.5 GB
Events in quadrant A56,576,40910,171,783
Events in quadrant B57,811,95110,334,080
Events in quadrant C57,978,7689,956,632
Events in quadrant D66,196,9689,521,560

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02020
B02020
C02020
D02020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02516040
B02529980
C02572570
D02829830

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A024780
B024780
C024780
D024780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12171314171.164214%
B12171214791.215164%
C12171218261.500263%
D12171429432.417963%

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 141641 121730 87 87 0.06% 0.07%
B 141641 121728 25 25 0.02% 0.02%
C 141641 121730 765 765 0.54% 0.63%
D 141641 121728 1614 1614 1.14% 1.33%

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 352553 116.36 14508 14189 2908.0
A 13 14 258778 84.11 14508 14189 2908.0
A 0 226 138716 42.82 14508 14189 2908.0
B 0 219 276939 96.63 14626 14281 2718.2
B 12 111 276495 96.46 14626 14281 2718.2
B 0 214 259699 90.29 14626 14281 2718.2
C 9 68 2444910 752.2 14069 14125 3231.6
C 1 16 271021 79.5 14069 14125 3231.6
C 8 229 202510 58.3 14069 14125 3231.6
D 2 152 5259674 1549.18 13991 13547 3386.4
D 2 14 1861507 545.7 13991 13547 3386.4
D 2 136 1352224 395.31 13991 13547 3386.4

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