ASTROSAT CZTI

Data Quality Report

Orbit 20151017_P01_126T03_9000000032_level2

Creation date: 2016-09-06T18:00:31.602180
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_126T03_9000000032cztM0_level2_bc.evt modeM0/AS1P01_126T03_9000000032cztM0_level2_quad_clean.evt
Size (bytes)483,595,200179,490,240
Size461.2 MB 171.2 MB
Events in quadrant A3,689,3691,133,088
Events in quadrant B3,460,5451,149,226
Events in quadrant C2,646,5391,126,218
Events in quadrant D3,911,4391,083,782

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0623450
B0605340
C0540800
D0577750

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0520
C0520
D0520

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02780
B02780
C02780
D02780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13670690.504755%
B13671390.285275%
C13671360.263331%
D136713012.201741%

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 18787 13671 23 23 0.12% 0.17%
B 18787 13671 11 11 0.06% 0.08%
C 18787 13671 7 7 0.04% 0.05%
D 18787 13671 49 49 0.26% 0.36%

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 822032 6609.36 583 570 124.3
A 15 66 165778 1329.24 583 570 124.3
A 15 250 97762 781.99 583 570 124.3
B 7 220 192888 1710.58 598 578 112.4
B 10 14 192454 1706.72 598 578 112.4
B 2 32 178264 1580.5 598 578 112.4
C 1 1 130526 1053.51 572 562 123.4
C 3 159 90101 725.82 572 562 123.4
C 10 19 62095 498.8 572 562 123.4
D 1 5 340763 2667.62 566 548 127.5
D 2 105 283017 2214.83 566 548 127.5
D 13 7 227249 1777.56 566 548 127.5

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