ASTROSAT CZTI

Data Quality Report

Orbit 20170525_G07_019T01_9000001244_level2

Creation date: 2017-09-24T00:31:13.888170
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/AS1G07_019T01_9000001244cztM0_level2.evt modeM0/AS1G07_019T01_9000001244cztM0_level2_quad_clean.evt
Size (bytes)4,532,702,400743,578,560
Size4.2 GB 709.1 MB
Events in quadrant A33,276,9824,731,568
Events in quadrant B34,678,6674,697,268
Events in quadrant C28,367,6874,688,807
Events in quadrant D37,047,9674,430,598

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0910
B0910
C0910
D0910

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01372520
B01410530
C01243490
D01486490

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011820
B011820
C011820
D011820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5791710911.883730%
B5791726234.528895%
C579178251.424452%
D5791627204.696457%

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 67008 57927 354 354 0.53% 0.61%
B 67008 57924 1593 1593 2.38% 2.75%
C 67008 57928 321 321 0.48% 0.55%
D 67008 57926 2233 2233 3.33% 3.85%

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 8 5 5134744 3691.79 6903 6754 1389.0
A 5 16 811663 579.48 6903 6754 1389.0
A 15 174 619116 440.86 6903 6754 1389.0
B 10 16 4083094 3186.41 6840 6671 1279.3
B 0 85 1974212 1537.96 6840 6671 1279.3
B 10 252 887034 688.15 6840 6671 1279.3
C 4 254 2218710 1445.23 6679 6711 1530.5
C 13 61 51153 29.04 6679 6711 1530.5
C 14 234 34539 18.18 6679 6711 1530.5
D 1 52 3404432 1962.58 6550 6403 1731.4
D 13 29 3211634 1851.23 6550 6403 1731.4
D 8 195 1568435 902.17 6550 6403 1731.4

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