ASTROSAT CZTI

Data Quality Report

Orbit 20161028_G06_023T01_9000000762_level2

Creation date: 2017-09-18T21:07:51.933352
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_023T01_9000000762cztM0_level2.evt modeM0/AS1G06_023T01_9000000762cztM0_level2_quad_clean.evt
Size (bytes)5,919,367,6801,003,492,800
Size5.5 GB 957.0 MB
Events in quadrant A34,617,1096,673,990
Events in quadrant B34,946,7586,778,662
Events in quadrant C31,426,1376,550,185
Events in quadrant D73,433,2125,458,081

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01551810
B01540980
C01475760
D02688340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014600
B014600
C014600
D014600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A719119431.311343%
B7191710561.468359%
C719245710.793894%
D718981344018.693149%

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 83150 71952 28 28 0.03% 0.04%
B 83150 71953 86 86 0.10% 0.12%
C 83150 71955 17 17 0.02% 0.02%
D 83149 71947 11361 11361 13.66% 15.79%

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 15 236 2885320 1754.43 8165 8001 1640.0
A 15 234 174978 101.81 8165 8001 1640.0
A 0 226 79470 43.58 8165 8001 1640.0
B 4 200 634912 406.93 8263 8075 1540.4
B 15 204 624560 400.21 8263 8075 1540.4
B 4 81 365279 231.89 8263 8075 1540.4
C 1 16 313686 167.03 7946 7960 1830.4
C 13 61 64393 30.83 7946 7960 1830.4
C 1 241 49284 22.58 7946 7960 1830.4
D 2 152 35873595 20469.29 7256 7047 1752.2
D 1 20 4033838 2298.12 7256 7047 1752.2
D 2 136 1739153 988.53 7256 7047 1752.2

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