ASTROSAT CZTI

Data Quality Report

Orbit 20160827_G05_157T01_9000000626_level2

Creation date: 2016-09-19T15:11:23.021120
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/AS1G05_157T01_9000000626cztM0_level2_bc.evt modeM0/AS1G05_157T01_9000000626cztM0_level2_quad_clean.evt
Size (bytes)2,969,464,320917,778,240
Size2.8 GB 875.3 MB
Events in quadrant A22,605,0875,567,353
Events in quadrant B18,413,6395,790,016
Events in quadrant C14,451,8425,827,159
Events in quadrant D29,309,8685,430,025

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01150
B01150
C01150
D01150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015440
B015440
C015440
D015420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01897270
B01660050
C01546590
D02101750

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7556948426.407389%
B7556514131.869913%
C755655200.688149%
D7556244715.916995%

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 87163 75553 1008 1008 1.16% 1.33%
B 87163 75562 114 114 0.13% 0.15%
C 87163 75566 0 0 0.00% 0.00%
D 87163 75560 467 467 0.54% 0.62%

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 31 6833960 8543.55 3596 3520 799.5
A 0 50 800435 996.79 3596 3520 799.5
A 13 251 509220 632.53 3596 3520 799.5
B 10 16 1887866 2636.62 3733 3634 714.6
B 15 204 728032 1013.66 3733 3634 714.6
B 8 3 392839 544.62 3733 3634 714.6
C 14 67 58561 67.95 3644 3594 809.0
C 12 4 52047 59.89 3644 3594 809.0
C 1 16 36595 40.79 3644 3594 809.0
D 2 33 5806103 6760.48 3585 3443 858.3
D 1 7 2248389 2615.51 3585 3443 858.3
D 13 235 1980402 2303.29 3585 3443 858.3

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