ASTROSAT CZTI

Data Quality Report

Orbit 20180302_G08_031T02_9000001934_level2

Creation date: 2018-07-06T17:17:17.533273
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/AS1G08_031T02_9000001934cztM0_level2_bc.evt modeM0/AS1G08_031T02_9000001934cztM0_level2_quad_clean.evt
Size (bytes)2,099,226,240718,447,680
Size2.0 GB 685.2 MB
Events in quadrant A10,971,4924,865,787
Events in quadrant B16,987,7024,648,444
Events in quadrant C8,722,8254,969,915
Events in quadrant D23,891,9754,254,371

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0961210
B01273010
C0897500
D01517400

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08960
B08960
C08960
D08960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0880
B0880
C0880
D0880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A439896111.388984%
B43989523811.907522%
C439891150.261429%
D43989769717.497556%

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 52816 43989 174 174 0.33% 0.40%
B 52816 43877 324 324 0.61% 0.74%
C 52816 43990 0 0 0.00% 0.00%
D 52816 43975 922 922 1.75% 2.10%

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 4 2 792125 1636.69 2213 2170 482.7
A 12 189 691628 1428.48 2213 2170 482.7
A 0 23 549806 1134.64 2213 2170 482.7
B 4 239 4090797 10226.28 2108 2057 399.8
B 0 85 3332076 8328.65 2108 2057 399.8
B 3 64 823445 2054.36 2108 2057 399.8
C 15 208 51625 100.62 2208 2181 491.4
C 12 4 18557 33.33 2208 2181 491.4
C 14 234 14128 24.31 2208 2181 491.4
D 13 122 11205607 24195.04 2002 1939 463.1
D 1 52 4437080 9577.97 2002 1939 463.1
D 10 157 202114 432.29 2002 1939 463.1

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