ASTROSAT CZTI

Data Quality Report

Orbit 20151126_P01_999T99_9000000140_level2

Creation date: 2016-09-06T17:57:41.936678
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/AS1P01_999T99_9000000140cztM0_level2_bc.evt modeM0/AS1P01_999T99_9000000140cztM0_level2_quad_clean.evt
Size (bytes)33,505,92018,809,280
Size32.0 MB 17.9 MB
Events in quadrant A210,746121,319
Events in quadrant B237,526122,643
Events in quadrant C235,852119,520
Events in quadrant D241,125115,773

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A055410
B056440
C050910
D049340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A118710.084246%
B118720.168492%
C1187110.926706%
D118710.084246%

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 1186 1186 0 0 0.00% 0.00%
B 1186 1186 0 0 0.00% 0.00%
C 1186 1186 7 7 0.59% 0.59%
D 1186 1186 0 0 0.00% 0.00%

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 17 528 34.83 54 53 13.6
A 10 133 491 32.12 54 53 13.6
A 10 83 126 5.35 54 53 13.6
B 0 220 8403 664.56 55 54 12.6
B 0 184 6205 489.61 55 54 12.6
B 0 190 5926 467.4 55 54 12.6
C 9 83 18921 1404.74 53 52 13.4
C 15 241 1817 131.4 53 52 13.4
C 3 111 1288 92.02 53 52 13.4
D 7 207 14507 1086.4 52 51 13.3
D 10 157 5049 375.61 52 51 13.3
D 2 16 4504 334.65 52 51 13.3

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