ASTROSAT CZTI

Data Quality Report

Orbit 20191120_T03_149T03_9000003318_level2

Creation date: 2019-11-21T09:47:12.388716
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/AS1T03_149T03_9000003318cztM0_level2_bc.evt modeM0/AS1T03_149T03_9000003318cztM0_level2_quad_clean.evt
Size (bytes)175,389,12071,668,800
Size167.3 MB 68.3 MB
Events in quadrant A1,074,253454,195
Events in quadrant B1,164,007458,858
Events in quadrant C1,042,094436,885
Events in quadrant D1,646,806433,761

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112670
B0115590
C0112730
D0129900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5525681.230769%
B5525671.212670%
C5525811.466063%
D55251071.936652%

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 5524 5524 0 0 0.00% 0.00%
B 5523 5523 0 0 0.00% 0.00%
C 5523 5523 0 0 0.00% 0.00%
D 5523 5523 14 14 0.25% 0.25%

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 13 254 6536 99.6 275 269 62.9
A 11 29 3953 58.55 275 269 62.9
A 15 174 3855 56.99 275 269 62.9
B 0 244 56899 1026.04 278 270 55.2
B 0 197 11129 196.75 278 270 55.2
B 0 229 10830 191.33 278 270 55.2
C 1 16 18255 276.1 266 262 65.2
C 13 61 1484 18.75 266 262 65.2
C 0 10 906 9.88 266 262 65.2
D 1 52 531271 8095.98 271 260 65.6
D 9 85 33690 509.69 271 260 65.6
D 2 234 24282 366.25 271 260 65.6

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