ASTROSAT CZTI

Data Quality Report

Orbit 20160527_G05_246T04_9000000472_level2

Creation date: 2016-09-06T17:49:55.721327
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/AS1G05_246T04_9000000472cztM0_level2_bc.evt modeM0/AS1G05_246T04_9000000472cztM0_level2_quad_clean.evt
Size (bytes)2,324,540,160756,394,560
Size2.2 GB 721.4 MB
Events in quadrant A14,830,9494,737,418
Events in quadrant B16,221,5684,736,797
Events in quadrant C22,221,2274,575,017
Events in quadrant D12,876,8974,585,070

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01361640
B01395380
C01678470
D01311170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012680
B012680
C012680
D012680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0940
B0940
C0940
D0940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A623448851.419543%
B623458421.350549%
C6234433915.439176%
D623466871.101915%

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 71560 62350 22 22 0.03% 0.04%
B 71560 62345 29 29 0.04% 0.05%
C 71560 62348 80 80 0.11% 0.13%
D 71560 62349 31 31 0.04% 0.05%

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 8 15 2312253 3502.48 2982 2916 659.3
A 0 50 514861 776.45 2982 2916 659.3
A 3 1 210080 314.2 2982 2916 659.3
B 15 204 3305722 5684.13 3006 2911 581.1
B 4 81 348113 594.09 3006 2911 581.1
B 14 167 217535 369.37 3006 2911 581.1
C 2 53 8109457 12547.7 2881 2829 646.1
C 9 247 2390089 3695.08 2881 2829 646.1
C 1 16 199045 303.71 2881 2829 646.1
D 13 223 446349 646.43 2965 2846 686.1
D 13 239 178877 256.57 2965 2846 686.1
D 10 172 169353 242.69 2965 2846 686.1

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