ASTROSAT CZTI

Data Quality Report

Orbit 20161121_G06_145T01_9000000816_level2

Creation date: 2017-09-19T04:51:02.973384
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/AS1G06_145T01_9000000816cztM0_level2.evt modeM0/AS1G06_145T01_9000000816cztM0_level2_quad_clean.evt
Size (bytes)2,267,784,000362,911,680
Size2.1 GB 346.1 MB
Events in quadrant A16,968,8632,254,886
Events in quadrant B16,181,3022,287,836
Events in quadrant C13,081,4732,281,271
Events in quadrant D20,415,9352,096,232

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06100
B06100
C06100
D06100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0709850
B0689510
C0612430
D0815470

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A301484071.350007%
B301486402.122861%
C30148700.232188%
D3014813954.627173%

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 32298 30153 54 54 0.17% 0.18%
B 32298 30152 262 262 0.81% 0.87%
C 32298 30154 1 1 0.00% 0.00%
D 32298 30153 1299 1299 4.02% 4.31%

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 34 3069028 4377.51 3411 3332 700.3
A 8 15 356033 503.62 3411 3332 700.3
A 15 236 131038 182.35 3411 3332 700.3
B 3 64 1757693 2670.67 3440 3352 656.9
B 0 219 381351 575.44 3440 3352 656.9
B 0 187 204451 306.14 3440 3352 656.9
C 9 54 27534 31.58 3339 3352 765.7
C 13 61 26194 29.83 3339 3352 765.7
C 1 16 21188 23.29 3339 3352 765.7
D 12 221 4448927 5582.54 3256 3145 796.4
D 2 63 1589522 1992.0 3256 3145 796.4
D 2 136 1490114 1867.18 3256 3145 796.4

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