ASTROSAT CZTI

Data Quality Report

Orbit 20151025_P01_161T03_9000000070_level2

Creation date: 2016-09-06T17:59:44.919062
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_161T03_9000000070cztM0_level2_bc.evt modeM0/AS1P01_161T03_9000000070cztM0_level2_quad_clean.evt
Size (bytes)944,789,760246,110,400
Size901.0 MB 234.7 MB
Events in quadrant A5,915,6781,364,660
Events in quadrant B5,993,9281,367,223
Events in quadrant C5,890,5421,352,434
Events in quadrant D8,760,8841,304,729

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01266890
B01264480
C01194350
D01229080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06140
B06140
C06140
D06140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A30033240.079912%
B30033610.203110%
C30033400.133187%
D300331340.446176%

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 47698 30034 4 4 0.01% 0.01%
B 47698 30034 23 23 0.05% 0.08%
C 47698 30034 20 20 0.04% 0.07%
D 47698 30034 29 29 0.06% 0.10%

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 0 238 382113 1457.04 1247 1220 261.4
A 12 133 249732 950.64 1247 1220 261.4
A 12 243 94679 357.51 1247 1220 261.4
B 2 32 296172 1279.41 1275 1237 230.5
B 0 23 149497 643.14 1275 1237 230.5
B 0 220 88110 376.85 1275 1237 230.5
C 1 1 681493 2559.23 1241 1217 265.8
C 3 159 120977 450.54 1241 1217 265.8
C 9 206 61429 226.52 1241 1217 265.8
D 13 7 1146237 4245.42 1229 1197 269.7
D 13 221 662279 2451.07 1229 1197 269.7
D 1 5 362171 1338.37 1229 1197 269.7

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
Veto Counter