ASTROSAT CZTI

Data Quality Report

Orbit 20160617_G05_172T01_9000000502_level2

Creation date: 2018-05-17T10:12:41.730808
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_172T01_9000000502cztM0_level2.evt modeM0/AS1G05_172T01_9000000502cztM0_level2_quad_clean.evt
Size (bytes)15,509,131,2002,618,320,320
Size14.4 GB 2.4 GB
Events in quadrant A110,355,29116,313,532
Events in quadrant B114,365,75316,530,646
Events in quadrant C94,846,68716,423,764
Events in quadrant D135,743,47515,421,314

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04725520
B04773600
C04380800
D05559280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03070
B03070
C03070
D03080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A043400
B043400
C043380
D043340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A21341844562.087921%
B21341535971.685449%
C21341016830.788623%
D213373105954.965483%

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 245174 213563 1344 1344 0.55% 0.63%
B 245174 213558 687 687 0.28% 0.32%
C 245174 213563 104 104 0.04% 0.05%
D 245174 213550 8247 8247 3.36% 3.86%

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 0 118 5146427 1029.23 24585 24083 4976.9
A 8 15 4914430 982.61 24585 24083 4976.9
A 0 50 2921871 582.25 24585 24083 4976.9
B 3 0 7426689 1574.08 24860 24279 4702.7
B 15 204 5220746 1105.0 24860 24279 4702.7
B 10 16 1414595 295.64 24860 24279 4702.7
C 10 65 553834 96.6 23845 23928 5485.5
C 9 247 333119 56.37 23845 23928 5485.5
C 1 16 276544 46.05 23845 23928 5485.5
D 9 82 14766559 2644.98 23399 22725 5574.3
D 2 232 12556154 2248.44 23399 22725 5574.3
D 2 63 4432269 791.05 23399 22725 5574.3

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