ASTROSAT CZTI

Data Quality Report

Orbit 20180214_C03_001T01_9000001894_level2

Creation date: 2018-07-16T11:17:26.602476
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/AS1C03_001T01_9000001894cztM0_level2_bc.evt modeM0/AS1C03_001T01_9000001894cztM0_level2_quad_clean.evt
Size (bytes)2,960,907,8401,327,841,280
Size2.8 GB 1.2 GB
Events in quadrant A15,818,2369,201,620
Events in quadrant B27,245,0808,590,306
Events in quadrant C14,215,0429,139,687
Events in quadrant D27,450,2758,316,967

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014800
B014800
C014800
D014800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01544340
B02120070
C01473950
D02039740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A724667991.102586%
B72466918812.679049%
C724664190.578202%
D7246661278.455000%

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 84627 72467 6 6 0.01% 0.01%
B 84627 72304 288 288 0.34% 0.40%
C 84627 72465 0 0 0.00% 0.00%
D 84627 72456 796 796 0.94% 1.10%

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 1 162 609777 757.47 3701 3645 800.2
A 15 174 281583 347.33 3701 3645 800.2
A 12 189 171301 209.52 3701 3645 800.2
B 4 239 8227806 12614.09 3449 3361 652.0
B 0 85 2960312 4535.17 3449 3361 652.0
B 3 64 648555 989.55 3449 3361 652.0
C 3 233 56774 66.51 3612 3564 800.1
C 4 112 27866 30.37 3612 3564 800.1
C 13 61 21506 22.43 3612 3564 800.1
D 1 52 11782963 14589.39 3468 3351 807.4
D 4 95 802434 989.69 3468 3351 807.4
D 8 195 448782 551.68 3468 3351 807.4

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