ASTROSAT CZTI

Data Quality Report

Orbit 20161002_A02_063T01_9000000702_level2

Creation date: 2017-10-18T06:05:54.131089
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_063T01_9000000702cztM0_level2.evt modeM0/AS1A02_063T01_9000000702cztM0_level2_quad_clean.evt
Size (bytes)2,576,485,440462,228,480
Size2.4 GB 440.8 MB
Events in quadrant A16,545,5912,936,671
Events in quadrant B19,485,5372,959,667
Events in quadrant C21,302,2962,817,108
Events in quadrant D18,207,5842,757,470

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0410
C0400
D0430

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0754720
B0823000
C0889150
D0801670

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07540
B07430
C07520
D07460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A369473540.958129%
B367035251.430401%
C3668516524.503203%
D367905201.413428%

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 50637 38685 3 3 0.01% 0.01%
B 50637 38493 68 68 0.13% 0.18%
C 50637 38555 1133 1133 2.24% 2.94%
D 50637 38607 200 200 0.39% 0.52%

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 15 234 73617 80.06 4266 4171 867.5
A 12 194 41971 43.58 4266 4171 867.5
A 0 226 41798 43.38 4266 4171 867.5
B 15 204 952230 1164.79 4282 4180 813.9
B 10 16 660495 806.36 4282 4180 813.9
B 15 255 491557 598.8 4282 4180 813.9
C 9 247 4805871 5140.32 4042 4061 934.1
C 1 16 514021 545.91 4042 4061 934.1
C 1 241 175513 183.54 4042 4061 934.1
D 2 152 682229 675.6 4117 3995 1003.9
D 2 33 536132 530.07 4117 3995 1003.9
D 8 195 441679 435.98 4117 3995 1003.9

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