ASTROSAT CZTI

Data Quality Report

Orbit 20151012_P01_118T01_9000000020_level2

Creation date: 2016-09-06T18:00:51.162608
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_118T01_9000000020cztM0_level2_bc.evt modeM0/AS1P01_118T01_9000000020cztM0_level2_quad_clean.evt
Size (bytes)977,613,120312,523,200
Size932.3 MB 298.0 MB
Events in quadrant A11,423,6451,914,918
Events in quadrant B5,209,6461,961,477
Events in quadrant C4,556,4101,952,971
Events in quadrant D6,678,2311,884,244

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01298040
B01086020
C01004770
D01040560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01070
B01070
C01070
D01070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05280
B05280
C05280
D05280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A255126542.563500%
B25464480.188501%
C25512610.239103%
D25389870.342668%

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 36311 25511 251 251 0.69% 0.98%
B 36311 25464 6 6 0.02% 0.02%
C 36310 25509 0 0 0.00% 0.00%
D 36311 25391 22 22 0.06% 0.09%

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 15 127 6916184 30648.83 1073 1049 225.6
A 0 253 81317 355.76 1073 1049 225.6
A 12 189 37295 160.65 1073 1049 225.6
B 14 50 346517 1699.95 1105 1068 203.2
B 5 46 145617 711.32 1105 1068 203.2
B 0 183 64568 312.48 1105 1068 203.2
C 0 186 111183 485.53 1067 1044 226.8
C 1 1 71286 309.65 1067 1044 226.8
C 3 159 68198 296.04 1067 1044 226.8
D 1 4 910108 3796.85 1062 1027 239.4
D 13 117 139126 576.78 1062 1027 239.4
D 1 5 118677 491.38 1062 1027 239.4

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