ASTROSAT CZTI

Data Quality Report

Orbit 20151018_P01_126T04_9000000036_level2

Creation date: 2016-09-06T18:00:28.657263
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/AS1P01_126T04_9000000036cztM0_level2_bc.evt modeM0/AS1P01_126T04_9000000036cztM0_level2_quad_clean.evt
Size (bytes)1,753,297,920579,853,440
Size1.6 GB 553.0 MB
Events in quadrant A10,430,8973,432,285
Events in quadrant B10,992,5993,492,719
Events in quadrant C15,251,7733,401,709
Events in quadrant D12,545,3353,335,414

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02426100
B02416430
C02407290
D02234680

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011600
B011600
C011600
D011600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02410
B02410
C02410
D02410

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A56868810.142435%
B568691050.184635%
C568642900.509989%
D568672020.355215%

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 86390 56871 19 19 0.02% 0.03%
B 86390 56872 9 9 0.01% 0.02%
C 86390 56871 139 139 0.16% 0.24%
D 86390 56867 14 14 0.02% 0.02%

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 6 199535 390.73 2418 2362 504.6
A 15 127 198616 388.9 2418 2362 504.6
A 0 69 198041 387.77 2418 2362 504.6
B 5 46 282839 624.58 2495 2413 449.0
B 0 183 265911 586.88 2495 2413 449.0
B 8 6 96357 209.24 2495 2413 449.0
C 1 1 3139524 6271.43 2383 2335 500.2
C 2 192 1701293 3396.32 2383 2335 500.2
C 3 159 341939 678.89 2383 2335 500.2
D 13 216 643058 1251.1 2369 2299 512.2
D 1 5 459370 892.44 2369 2299 512.2
D 7 85 244874 473.63 2369 2299 512.2

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
Veto Counter