ASTROSAT CZTI

Data Quality Report

Orbit 20180404_C03_015T02_9000002008_level2

Creation date: 2018-04-05T10:01:45.422225
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/AS1C03_015T02_9000002008cztM0_level2_bc.evt modeM0/AS1C03_015T02_9000002008cztM0_level2_quad_clean.evt
Size (bytes)647,755,200252,109,440
Size617.7 MB 240.4 MB
Events in quadrant A2,743,5901,742,008
Events in quadrant B3,745,3491,760,687
Events in quadrant C2,927,0701,730,463
Events in quadrant D9,312,7581,507,069

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0265080
B0299150
C0266660
D0517460

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02620
B02620
C02620
D02620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12955580.447704%
B129552211.705905%
C12955550.424547%
D12955259320.015438%

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 15416 12956 0 0 0.00% 0.00%
B 15416 12956 10 10 0.06% 0.08%
C 15416 12956 2 2 0.01% 0.02%
D 15416 12956 832 832 5.40% 6.42%

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 1 162 37116 237.27 700 689 153.5
A 12 189 6864 40.22 700 689 153.5
A 12 194 4929 27.62 700 689 153.5
B 0 219 543384 4090.02 702 688 132.7
B 0 214 110278 825.92 702 688 132.7
B 4 173 61917 461.45 702 688 132.7
C 3 233 175396 1144.18 678 672 152.7
C 0 207 65048 421.57 678 672 152.7
C 14 234 23837 151.7 678 672 152.7
D 13 122 6051038 40724.61 633 612 148.6
D 8 195 323239 2171.56 633 612 148.6
D 5 222 185541 1244.73 633 612 148.6

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