ASTROSAT CZTI

Data Quality Report

Orbit 20161003_A02_162T01_9000000704_level2

Creation date: 2017-10-18T06:30:01.262213
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/AS1A02_162T01_9000000704cztM0_level2.evt modeM0/AS1A02_162T01_9000000704cztM0_level2_quad_clean.evt
Size (bytes)7,594,629,120909,694,080
Size7.1 GB 867.6 MB
Events in quadrant A41,573,5005,547,957
Events in quadrant B81,803,9215,151,257
Events in quadrant C49,296,0925,504,524
Events in quadrant D51,346,0445,252,178

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01869510
B03027490
C02087870
D02153350

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018260
B018420
C018120
D018320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01630
B01620
C01630
D01610

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8923812871.442211%
B876901114012.703843%
C8922230403.407231%
D8914820892.343294%

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 109120 91126 245 245 0.22% 0.27%
B 109120 89830 8319 8319 7.62% 9.26%
C 109120 91136 1916 1916 1.76% 2.10%
D 109120 91093 1045 1045 0.96% 1.15%

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 1189901 556.23 10430 10205 2120.9
A 12 194 103391 43.94 10430 10205 2120.9
A 0 226 103242 43.87 10430 10205 2120.9
B 15 255 35312014 18664.84 9999 9762 1891.4
B 15 204 5326242 2810.9 9999 9762 1891.4
B 4 48 782343 408.48 9999 9762 1891.4
C 9 247 5304093 2324.03 9944 9985 2278.0
C 1 241 3346049 1464.48 9944 9985 2278.0
C 1 16 1650191 720.02 9944 9985 2278.0
D 2 63 5091584 2082.79 10029 9718 2439.9
D 2 152 2596150 1060.04 10029 9718 2439.9
D 2 136 1810401 738.0 10029 9718 2439.9

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