ASTROSAT CZTI

Data Quality Report

Orbit 20160829_G05_115T01_9000000634_level2

Creation date: 2017-10-27T06:52:48.982411
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_115T01_9000000634cztM0_level2.evt modeM0/AS1G05_115T01_9000000634cztM0_level2_quad_clean.evt
Size (bytes)4,575,473,280897,652,800
Size4.3 GB 856.1 MB
Events in quadrant A30,141,0635,692,239
Events in quadrant B32,971,8485,774,359
Events in quadrant C29,147,2425,763,524
Events in quadrant D41,868,7795,448,190

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013360
B013460
C013400
D013400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0860
B0850
C0850
D0850

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01356040
B01423590
C01340800
D01703370

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A657767101.079421%
B657669571.455159%
C658103740.568303%
D6567928854.392576%

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 89220 66238 20 20 0.02% 0.03%
B 89220 66223 88 88 0.10% 0.13%
C 89220 66255 3 3 0.00% 0.00%
D 89220 66121 2115 2115 2.37% 3.20%

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 13 251 360397 231.73 7604 7422 1523.2
A 8 15 199322 125.98 7604 7422 1523.2
A 0 50 159905 100.11 7604 7422 1523.2
B 0 219 1507345 1041.69 7665 7486 1439.8
B 15 204 895067 616.45 7665 7486 1439.8
B 4 80 278001 187.88 7665 7486 1439.8
C 13 61 61285 31.71 7439 7468 1697.3
C 12 4 57694 29.59 7439 7468 1697.3
C 1 16 51068 25.69 7439 7468 1697.3
D 2 33 3910087 2188.07 7346 7123 1783.7
D 13 235 3650298 2042.42 7346 7123 1783.7
D 2 136 1583197 883.57 7346 7123 1783.7

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