ASTROSAT CZTI

Data Quality Report

Orbit 20161223_G06_135T02_9000000918_level2

Creation date: 2017-09-22T15:19:00.203348
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_135T02_9000000918cztM0_level2.evt modeM0/AS1G06_135T02_9000000918cztM0_level2_quad_clean.evt
Size (bytes)2,199,841,920301,726,080
Size2.0 GB 287.7 MB
Events in quadrant A17,498,9481,790,611
Events in quadrant B12,470,7501,935,405
Events in quadrant C11,551,2031,915,111
Events in quadrant D23,315,1001,675,591

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05400
B05400
C05400
D05400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0709610
B0558230
C0542770
D0882170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2645823969.055862%
B264584561.723486%
C264582050.774813%
D26458459717.374707%

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 28568 26463 1524 1524 5.33% 5.76%
B 28568 26463 32 32 0.11% 0.12%
C 28568 26463 5 5 0.02% 0.02%
D 28568 26463 3344 3344 11.71% 12.64%

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 5624524 9703.05 2868 2800 579.4
A 14 207 302976 518.1 2868 2800 579.4
A 8 15 300666 514.11 2868 2800 579.4
B 11 51 185788 315.3 3035 2963 579.9
B 0 228 159148 269.35 3035 2963 579.9
B 0 214 151042 255.37 3035 2963 579.9
C 9 247 99345 143.34 2919 2929 672.7
C 13 61 23212 30.15 2919 2929 672.7
C 12 4 22820 29.57 2919 2929 672.7
D 2 33 10929526 16674.9 2664 2574 655.3
D 8 195 1095947 1668.52 2664 2574 655.3
D 1 239 359175 544.19 2664 2574 655.3

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