ASTROSAT CZTI

Data Quality Report

Orbit 20180613_G08_076T02_9000002164_level2

Creation date: 2018-08-10T14:53:22.538080
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/AS1G08_076T02_9000002164cztM0_level2_bc.evt modeM0/AS1G08_076T02_9000002164cztM0_level2_quad_clean.evt
Size (bytes)1,452,830,400301,936,320
Size1.4 GB 287.9 MB
Events in quadrant A22,302,1751,774,628
Events in quadrant B5,635,7831,945,020
Events in quadrant C7,410,4291,888,116
Events in quadrant D6,978,0281,845,037

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05020
B05020
C05020
D05020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0450
B0450
C0450
D0450

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01061890
B0528380
C0589910
D0570430

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A24584296412.056622%
B245852350.955867%
C245851530.622331%
D245854761.936140%

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 32925 24584 588 588 1.79% 2.39%
B 32925 24589 0 0 0.00% 0.00%
C 32925 24588 11 11 0.03% 0.04%
D 32925 24586 91 91 0.28% 0.37%

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 0 253 9874007 36407.45 1238 1216 271.2
A 0 23 6883984 25381.27 1238 1216 271.2
A 0 226 420489 1546.13 1238 1216 271.2
B 0 189 162223 647.33 1307 1273 248.6
B 0 219 69866 275.88 1307 1273 248.6
B 0 190 54264 213.13 1307 1273 248.6
C 3 233 2340864 8456.08 1256 1239 276.7
C 0 207 112837 403.35 1256 1239 276.7
C 5 223 15977 53.27 1256 1239 276.7
D 10 199 712840 2246.66 1257 1224 316.7
D 12 110 505497 1592.05 1257 1224 316.7
D 13 122 254659 800.12 1257 1224 316.7

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