ASTROSAT CZTI

Data Quality Report

Orbit 20161207_A02_058T03_9000000856_level2

Creation date: 2017-09-21T11:17:46.434369
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_058T03_9000000856cztM0_level2.evt modeM0/AS1A02_058T03_9000000856cztM0_level2_quad_clean.evt
Size (bytes)610,758,720115,295,040
Size582.5 MB 110.0 MB
Events in quadrant A4,492,856714,489
Events in quadrant B4,574,570722,177
Events in quadrant C4,284,827703,516
Events in quadrant D4,488,943681,903

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01960
B01960
C01960
D01960

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0201600
B0202360
C0198320
D0204320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A96581571.625595%
B96581801.863740%
C9658630.652309%
D9658670.693725%

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 9703 9659 0 0 0.00% 0.00%
B 9703 9659 4 4 0.04% 0.04%
C 9703 9659 0 0 0.00% 0.00%
D 9703 9659 3 3 0.03% 0.03%

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 15 239 181071 790.91 1110 1085 227.6
A 15 236 32169 136.59 1110 1085 227.6
A 0 226 10609 41.85 1110 1085 227.6
B 15 204 113835 524.03 1122 1093 215.1
B 0 229 65297 298.42 1122 1093 215.1
B 0 219 29220 130.74 1122 1093 215.1
C 8 128 15742 58.05 1088 1091 252.4
C 13 61 8545 29.53 1088 1091 252.4
C 8 112 7392 24.96 1088 1091 252.4
D 13 105 126525 472.5 1084 1046 265.6
D 5 97 68124 252.59 1084 1046 265.6
D 8 195 57450 212.39 1084 1046 265.6

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