ASTROSAT CZTI

Data Quality Report

Orbit 20170210_A02_150T04_9000001022_level2

Creation date: 2017-09-23T03:04:55.581034
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/AS1A02_150T04_9000001022cztM0_level2.evt modeM0/AS1A02_150T04_9000001022cztM0_level2_quad_clean.evt
Size (bytes)3,603,159,360657,751,680
Size3.4 GB 627.3 MB
Events in quadrant A24,082,2054,088,486
Events in quadrant B25,664,6164,179,967
Events in quadrant C29,447,9434,176,137
Events in quadrant D26,516,6404,008,439

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010300
B010300
C010300
D010300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0750
B0750
C0750
D0750

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01070320
B01104700
C01209400
D01143070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A505727621.506763%
B505728781.736139%
C505725251.038124%
D505728961.771731%

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 58093 50587 157 157 0.27% 0.31%
B 58093 50587 121 121 0.21% 0.24%
C 58093 50587 9 9 0.02% 0.02%
D 58093 50587 363 363 0.62% 0.72%

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 15 234 713528 584.01 6024 5899 1211.7
A 4 2 58878 43.72 6024 5899 1211.7
A 0 226 58724 43.6 6024 5899 1211.7
B 10 245 1182151 1018.43 6100 5955 1154.9
B 0 214 397317 338.87 6100 5955 1154.9
B 4 81 221729 186.83 6100 5955 1154.9
C 9 68 6216356 4544.3 5924 5959 1366.6
C 1 16 52766 34.25 5924 5959 1366.6
C 13 61 45866 29.2 5924 5959 1366.6
D 2 14 1242129 863.21 5897 5731 1432.3
D 13 169 661694 457.97 5897 5731 1432.3
D 2 16 468109 322.82 5897 5731 1432.3

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