ASTROSAT CZTI

Data Quality Report

Orbit 20171014_A04_053T01_9000001610_level2

Creation date: 2017-10-18T13:03:35.338258
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_053T01_9000001610cztM0_level2.evt modeM0/AS1A04_053T01_9000001610cztM0_level2_quad_clean.evt
Size (bytes)621,256,320108,722,880
Size592.5 MB 103.7 MB
Events in quadrant A3,763,656691,060
Events in quadrant B5,779,678675,046
Events in quadrant C3,689,752682,402
Events in quadrant D5,008,347656,931

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174430
B0228520
C0173960
D0208430

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A84571111.312522%
B84575146.077805%
C8457420.496630%
D84571551.832801%

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 8472 8458 1 1 0.01% 0.01%
B 8472 8458 288 288 3.40% 3.41%
C 8472 8458 1 1 0.01% 0.01%
D 8472 8458 84 84 0.99% 0.99%

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 14 238 13070 61.03 968 944 198.7
A 14 254 11852 54.9 968 944 198.7
A 13 248 11472 52.99 968 944 198.7
B 4 239 1702492 9268.57 961 936 183.6
B 3 189 97032 523.45 961 936 183.6
B 15 204 84403 454.65 961 936 183.6
C 14 234 9083 37.06 940 946 219.6
C 8 128 8130 32.72 940 946 219.6
C 13 61 7123 28.13 940 946 219.6
D 11 129 494305 2219.28 925 898 222.3
D 1 52 419636 1883.43 925 898 222.3
D 8 195 184848 827.38 925 898 222.3

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