ASTROSAT CZTI

Data Quality Report

Orbit 20160914_G05_141T01_9000000664_level2

Creation date: 2016-10-21T00:59:01.945149
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_141T01_9000000664cztM0_level2_bc.evt modeM0/AS1G05_141T01_9000000664cztM0_level2_quad_clean.evt
Size (bytes)1,935,717,120440,078,400
Size1.8 GB 419.7 MB
Events in quadrant A9,454,2492,649,345
Events in quadrant B10,114,0232,654,551
Events in quadrant C9,179,5542,681,214
Events in quadrant D26,695,0692,143,809

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0974790
B0993720
C0952840
D01845530

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09420
B09440
C09460
D09480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0710
B0710
C0710
D0710

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A465756611.419216%
B465906951.491736%
C465682630.564766%
D465711156624.835198%

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 53593 46649 35 35 0.07% 0.08%
B 53593 46656 25 25 0.05% 0.05%
C 53593 46654 1 1 0.00% 0.00%
D 53593 46639 868 868 1.62% 1.86%

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 50 734074 1468.3 2244 2192 498.5
A 4 2 31032 57.86 2244 2192 498.5
A 13 251 29778 55.34 2244 2192 498.5
B 4 80 259802 590.06 2276 2210 436.6
B 15 204 248499 564.17 2276 2210 436.6
B 5 172 175618 397.22 2276 2210 436.6
C 1 16 386099 780.35 2218 2176 492.0
C 12 4 35705 68.15 2218 2176 492.0
C 8 128 34282 65.26 2218 2176 492.0
D 11 145 17255234 38061.07 1909 1828 453.3
D 2 33 903052 1988.1 1909 1828 453.3
D 12 233 462148 1015.47 1909 1828 453.3

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