ASTROSAT CZTI

Data Quality Report

Orbit 20171028_A04_044T01_9000001648_level2

Creation date: 2017-10-31T09:24:15.735007
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/AS1A04_044T01_9000001648cztM0_level2.evt modeM0/AS1A04_044T01_9000001648cztM0_level2_quad_clean.evt
Size (bytes)6,570,763,200838,232,640
Size6.1 GB 799.4 MB
Events in quadrant A51,655,9445,240,289
Events in quadrant B47,600,3575,519,563
Events in quadrant C30,785,3505,335,455
Events in quadrant D64,445,9644,686,599

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012720
B012720
C012720
D012720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01070
B01070
C01070
D01070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01984470
B01864020
C01382710
D02374570

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6744850357.465010%
B6744851317.607342%
C674484440.658285%
D67448885313.125667%

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 78368 67459 2956 2956 3.77% 4.38%
B 78368 67458 2448 2448 3.12% 3.63%
C 78368 67460 0 0 0.00% 0.00%
D 78368 67455 7005 7005 8.94% 10.38%

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 8 5 9142197 5774.66 7864 7707 1581.8
A 14 238 6399026 4040.47 7864 7707 1581.8
A 13 251 2322332 1463.26 7864 7707 1581.8
B 4 239 8926492 5909.47 7968 7778 1509.2
B 3 64 5280597 3493.73 7968 7778 1509.2
B 11 51 801516 525.92 7968 7778 1509.2
C 13 61 57958 27.29 7889 7927 1833.6
C 9 204 24646 9.12 7889 7927 1833.6
C 14 234 22597 8.0 7889 7927 1833.6
D 10 253 8462889 4785.93 7332 7127 1766.8
D 1 52 5918048 3345.56 7332 7127 1766.8
D 13 152 5455925 3084.0 7332 7127 1766.8

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