ASTROSAT CZTI

Data Quality Report

Orbit 20160817_G05_002T03_9000000608_level2

Creation date: 2017-10-18T00:54:50.912107
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_002T03_9000000608cztM0_level2.evt modeM0/AS1G05_002T03_9000000608cztM0_level2_quad_clean.evt
Size (bytes)2,900,131,200463,821,120
Size2.7 GB 442.3 MB
Events in quadrant A18,468,5912,907,718
Events in quadrant B18,464,2712,967,560
Events in quadrant C18,042,7772,943,201
Events in quadrant D30,378,9302,707,921

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07460
B07460
C07460
D07460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0799290
B0794710
C0796560
D01156970

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0670
B0670
C0670
D0670

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A367136891.876719%
B367133811.037780%
C367125241.427326%
D36714486513.251076%

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 48306 36717 227 227 0.47% 0.62%
B 48306 36717 45 45 0.09% 0.12%
C 48306 36719 267 267 0.55% 0.73%
D 48306 36719 4496 4496 9.31% 12.24%

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 964856 1089.5 4330 4242 881.7
A 13 251 571199 643.03 4330 4242 881.7
A 8 15 126586 138.76 4330 4242 881.7
B 15 204 556027 662.61 4388 4288 832.7
B 10 16 281367 332.76 4388 4288 832.7
B 14 167 225717 265.92 4388 4288 832.7
C 9 247 1534338 1584.06 4185 4196 966.0
C 12 4 152637 153.67 4185 4196 966.0
C 13 61 34701 31.58 4185 4196 966.0
D 13 235 11974803 12475.93 4000 3892 959.5
D 2 136 920293 955.06 4000 3892 959.5
D 2 234 591992 612.91 4000 3892 959.5

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