ASTROSAT CZTI

Data Quality Report

Orbit 20151107_P01_126T01_9000000084_level2

Creation date: 2016-09-06T17:59:24.930128
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_126T01_9000000084cztM0_level2_bc.evt modeM0/AS1P01_126T01_9000000084cztM0_level2_quad_clean.evt
Size (bytes)2,667,784,320904,527,360
Size2.5 GB 862.6 MB
Events in quadrant A18,567,6125,562,745
Events in quadrant B16,854,8985,684,582
Events in quadrant C14,730,9345,610,080
Events in quadrant D25,535,7615,401,234

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015320
B015320
C015320
D015320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03318050
B03249370
C02969070
D03223710

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03790
B03790
C03790
D03810

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7495310421.390205%
B749533310.441610%
C749531050.140088%
D7495312841.713074%

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 117003 74953 429 429 0.37% 0.57%
B 117003 74953 99 99 0.08% 0.13%
C 117003 74952 34 34 0.03% 0.05%
D 117003 74951 613 613 0.52% 0.82%

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 15 200 2748538 4259.04 3102 3037 644.6
A 15 171 782673 1209.43 3102 3037 644.6
A 0 149 676042 1044.02 3102 3037 644.6
B 7 221 1848507 3231.13 3211 3116 571.1
B 5 191 645774 1125.24 3211 3116 571.1
B 4 250 609539 1061.8 3211 3116 571.1
C 15 241 564206 849.11 3123 3067 660.9
C 9 83 545925 821.45 3123 3067 660.9
C 1 1 513402 772.23 3123 3067 660.9
D 12 237 3418878 4984.63 3071 2982 685.3
D 1 4 2933791 4276.77 3071 2982 685.3
D 13 221 1515636 2207.33 3071 2982 685.3

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