ASTROSAT CZTI

Data Quality Report

Orbit 20160503_G05_104T01_9000000440_level2

Creation date: 2016-09-17T17:13:01.281232
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/AS1G05_104T01_9000000440cztM0_level2_bc.evt modeM0/AS1G05_104T01_9000000440cztM0_level2_quad_clean.evt
Size (bytes)3,561,589,4401,184,909,760
Size3.3 GB 1.1 GB
Events in quadrant A20,050,3397,440,312
Events in quadrant B29,121,0537,408,515
Events in quadrant C24,194,1277,306,375
Events in quadrant D27,818,7977,012,780

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020000
B020000
C020000
D020000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02037500
B02305570
C02165070
D02280040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01470
B01470
C01470
D01470

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9807713661.392783%
B9807714961.525332%
C9807716481.680312%
D9807722032.246194%

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 112806 98078 71 71 0.06% 0.07%
B 112806 98078 22 22 0.02% 0.02%
C 112806 98079 74 74 0.07% 0.08%
D 112806 98078 330 330 0.29% 0.34%

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 0 118 777921 714.88 4779 4714 1081.6
A 0 50 361771 330.12 4779 4714 1081.6
A 0 149 180097 162.15 4779 4714 1081.6
B 15 204 8761649 9182.51 4848 4736 953.7
B 2 249 456039 473.24 4848 4736 953.7
B 7 252 248977 256.11 4848 4736 953.7
C 14 223 2119274 2003.78 4681 4643 1055.3
C 14 48 2026758 1916.11 4681 4643 1055.3
C 6 80 629093 591.72 4681 4643 1055.3
D 13 114 5141528 4616.03 4663 4508 1112.9
D 13 223 2954669 2650.96 4663 4508 1112.9
D 13 239 524201 466.99 4663 4508 1112.9

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