ASTROSAT CZTI

Data Quality Report

Orbit 20180716_A04_218T03_9000002232_level2

Creation date: 2018-07-18T10:16:45.469711
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/AS1A04_218T03_9000002232cztM0_level2_bc.evt modeM0/AS1A04_218T03_9000002232cztM0_level2_quad_clean.evt
Size (bytes)2,347,237,440884,039,040
Size2.2 GB 843.1 MB
Events in quadrant A16,375,0185,594,317
Events in quadrant B16,331,5355,696,514
Events in quadrant C15,844,9145,625,105
Events in quadrant D17,943,8105,242,938

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013720
B013720
C013720
D013720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01470270
B01494030
C01434560
D01548930

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6732310641.580441%
B6732320713.076215%
C673237581.125915%
D6732324013.566389%

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 77709 67328 2 2 0.00% 0.00%
B 77709 67330 241 241 0.31% 0.36%
C 77709 67331 0 0 0.00% 0.00%
D 77709 67329 445 445 0.57% 0.66%

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 15 239 1582145 2085.93 3506 3434 756.8
A 12 189 835110 1098.88 3506 3434 756.8
A 11 29 261322 340.74 3506 3434 756.8
B 3 64 1933238 2963.01 3526 3433 651.3
B 3 209 100228 148.62 3526 3433 651.3
B 10 246 94499 139.82 3526 3433 651.3
C 3 233 2181092 2884.08 3472 3427 755.1
C 7 247 28375 33.04 3472 3427 755.1
C 13 61 20329 22.38 3472 3427 755.1
D 7 223 2770726 3491.05 3440 3312 792.7
D 10 70 389795 487.54 3440 3312 792.7
D 2 234 247947 308.6 3440 3312 792.7

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