ASTROSAT CZTI

Data Quality Report

Orbit 20160422_G05_237T03_9000000426_level2

Creation date: 2018-05-17T05:42:50.915977
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/AS1G05_237T03_9000000426cztM0_level2.evt modeM0/AS1G05_237T03_9000000426cztM0_level2_quad_clean.evt
Size (bytes)13,044,113,2802,159,856,000
Size12.1 GB 2.0 GB
Events in quadrant A86,602,88413,728,233
Events in quadrant B100,188,13913,337,769
Events in quadrant C99,159,29713,595,101
Events in quadrant D97,660,68513,134,490

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03430
B03430
C03430
D03430

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A034600
B034600
C034600
D034600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03703740
B04103550
C04128050
D04121000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16967930181.778653%
B16965586325.087973%
C16965058513.448865%
D16967155253.256302%

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 204459 169764 1085 1085 0.53% 0.64%
B 204459 169757 2200 2200 1.08% 1.30%
C 204459 169739 3527 3527 1.73% 2.08%
D 204459 169778 3406 3406 1.67% 2.01%

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 3394071 857.71 19564 19173 3934.8
A 14 249 2996144 756.58 19564 19173 3934.8
A 0 50 1681719 422.53 19564 19173 3934.8
B 4 81 11151586 3055.77 19242 18847 3643.2
B 15 204 4523204 1236.38 19242 18847 3643.2
B 0 219 2306772 628.0 19242 18847 3643.2
C 14 223 9428323 2172.82 18760 18926 4330.5
C 1 192 6224395 1432.97 18760 18926 4330.5
C 0 219 3672927 843.78 18760 18926 4330.5
D 1 7 6902398 1385.31 18642 18253 4969.4
D 13 114 3266045 653.56 18642 18253 4969.4
D 2 136 1993605 397.51 18642 18253 4969.4

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