ASTROSAT CZTI

Data Quality Report

Orbit 20170306_G06_169T01_9000001070_level2

Creation date: 2017-09-23T08:24:05.646337
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/AS1G06_169T01_9000001070cztM0_level2.evt modeM0/AS1G06_169T01_9000001070cztM0_level2_quad_clean.evt
Size (bytes)1,581,782,400274,052,160
Size1.5 GB 261.4 MB
Events in quadrant A10,865,6301,689,066
Events in quadrant B11,432,3521,728,001
Events in quadrant C10,776,0761,671,994
Events in quadrant D13,234,7111,586,569

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0510
B0510
C0510
D0510

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0480300
B0491710
C0481050
D0544420

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04780
B04780
C04780
D04780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A23621740.313281%
B236211070.452987%
C23621380.160874%
D236212130.901740%

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 28621 23624 1 1 0.00% 0.00%
B 28621 23624 11 11 0.04% 0.05%
C 28621 23623 0 0 0.00% 0.00%
D 28621 23625 145 145 0.51% 0.61%

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 0 226 26763 42.32 2820 2761 567.2
A 12 194 24622 38.54 2820 2761 567.2
A 13 254 10952 14.44 2820 2761 567.2
B 0 214 90539 164.36 2847 2785 533.9
B 4 81 63032 112.84 2847 2785 533.9
B 0 213 55843 99.38 2847 2785 533.9
C 1 16 68947 105.21 2734 2747 629.2
C 12 16 29072 41.84 2734 2747 629.2
C 12 4 21978 30.56 2734 2747 629.2
D 1 52 1667015 2522.93 2711 2628 659.7
D 2 152 557926 841.74 2711 2628 659.7
D 13 104 226099 338.74 2711 2628 659.7

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