ASTROSAT CZTI

Data Quality Report

Orbit 20170808_A03_044T03_9000001446_level2

Creation date: 2017-09-24T14:35:36.384571
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/AS1A03_044T03_9000001446cztM0_level2.evt modeM0/AS1A03_044T03_9000001446cztM0_level2_quad_clean.evt
Size (bytes)541,742,400107,124,480
Size516.6 MB 102.2 MB
Events in quadrant A3,505,581684,987
Events in quadrant B3,645,028698,590
Events in quadrant C3,357,941684,556
Events in quadrant D5,381,870647,394

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01540
C01520
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0160
C0150
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157470
B0160980
C0155540
D0210770

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7615640.840446%
B7633670.877768%
C7621450.590474%
D75621912.525787%

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 10985 7761 0 0 0.00% 0.00%
B 10987 7775 8 8 0.07% 0.10%
C 10985 7764 0 0 0.00% 0.00%
D 10985 7715 106 106 0.96% 1.37%

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 15 69903 387.68 881 863 178.1
A 0 8 24901 134.98 881 863 178.1
A 8 5 17468 93.24 881 863 178.1
B 4 81 74905 438.74 888 868 168.7
B 4 239 37974 219.89 888 868 168.7
B 0 214 37394 216.45 888 868 168.7
C 4 239 8833 40.34 854 858 197.7
C 14 67 7323 32.7 854 858 197.7
C 14 234 7263 32.4 854 858 197.7
D 2 16 887114 3972.96 834 816 223.1
D 8 195 620639 2778.45 834 816 223.1
D 2 152 162900 726.56 834 816 223.1

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