ASTROSAT CZTI

Data Quality Report

Orbit 20160930_G05_187T01_9000000690_level2

Creation date: 2016-10-21T05:09:25.121808
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_187T01_9000000690cztM0_level2_bc.evt modeM0/AS1G05_187T01_9000000690cztM0_level2_quad_clean.evt
Size (bytes)200,010,24049,809,600
Size190.7 MB 47.5 MB
Events in quadrant A1,018,615292,683
Events in quadrant B1,357,929294,554
Events in quadrant C1,478,162291,280
Events in quadrant D1,851,575275,935

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105060
B0116540
C0118580
D0128450

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5045791.565907%
B50451032.041625%
C50451462.893954%
D50451262.497522%

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 6330 5045 0 0 0.00% 0.00%
B 6330 5045 0 0 0.00% 0.00%
C 6330 5045 64 64 1.01% 1.27%
D 6330 5045 47 47 0.74% 0.93%

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 16457 277.24 255 248 58.5
A 13 6 9912 165.3 255 248 58.5
A 13 251 9066 150.83 255 248 58.5
B 15 204 279350 5505.33 259 252 50.7
B 4 48 30474 596.14 259 252 50.7
B 11 51 19655 382.73 259 252 50.7
C 9 247 492698 8613.6 250 246 57.2
C 14 67 2445 38.46 250 246 57.2
C 1 16 1707 25.55 250 246 57.2
D 2 33 677960 11314.68 250 241 59.9
D 11 192 50093 832.29 250 241 59.9
D 8 195 46085 765.38 250 241 59.9

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