ASTROSAT CZTI

Data Quality Report

Orbit 20181214_A05_012T02_9000002566_level2

Creation date: 2018-12-15T09:56:08.564485
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/AS1A05_012T02_9000002566cztM0_level2_bc.evt modeM0/AS1A05_012T02_9000002566cztM0_level2_quad_clean.evt
Size (bytes)960,258,240267,543,360
Size915.8 MB 255.1 MB
Events in quadrant A3,833,4201,811,316
Events in quadrant B4,138,3021,810,231
Events in quadrant C3,964,0571,741,338
Events in quadrant D15,950,1911,534,657

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03580
B03580
C03580
D03580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0440
B0440
C0440
D0440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370520
B0383380
C0380150
D0773720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A174793051.744951%
B174794242.425768%
C174794712.694662%
D17479445125.464844%

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 21884 17483 1 1 0.00% 0.01%
B 21884 17482 1 1 0.00% 0.01%
C 21884 17477 0 0 0.00% 0.00%
D 21884 17479 2011 2011 9.19% 11.51%

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 15 174 7404 29.7 996 980 216.3
A 0 226 6647 26.2 996 980 216.3
A 12 194 6544 25.73 996 980 216.3
B 15 35 58341 308.03 998 977 186.2
B 4 216 54150 285.53 998 977 186.2
B 0 189 53380 281.39 998 977 186.2
C 3 233 255395 1147.62 954 951 221.7
C 0 79 10596 43.5 954 951 221.7
C 8 128 10353 42.41 954 951 221.7
D 11 176 9584523 46973.66 881 853 204.0
D 13 232 1239392 6070.61 881 853 204.0
D 1 52 851112 4167.48 881 853 204.0

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