ASTROSAT CZTI

Data Quality Report

Orbit 20171012_A04_130T03_9000001602_level2

Creation date: 2017-10-17T11:34:01.661875
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/AS1A04_130T03_9000001602cztM0_level2.evt modeM0/AS1A04_130T03_9000001602cztM0_level2_quad_clean.evt
Size (bytes)1,651,743,360241,548,480
Size1.5 GB 230.4 MB
Events in quadrant A16,222,8671,482,609
Events in quadrant B12,723,9841,532,595
Events in quadrant C8,304,7541,571,124
Events in quadrant D11,560,1131,489,486

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0602530
B0493540
C0372570
D0459780

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03700
B03700
C03720
D03700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A17859195410.941262%
B1795413927.753147%
C180053121.732852%
D180068964.976119%

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 20962 18108 1247 1247 5.95% 6.89%
B 20962 18159 730 730 3.48% 4.02%
C 20962 18191 12 12 0.06% 0.07%
D 20962 18190 522 522 2.49% 2.87%

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 14 238 4949826 11553.41 2121 2077 428.3
A 15 174 2149502 5014.42 2121 2077 428.3
A 8 5 912094 2124.97 2121 2077 428.3
B 4 239 3967142 9682.97 2149 2095 409.5
B 3 189 111459 267.08 2149 2095 409.5
B 4 81 74811 177.58 2149 2095 409.5
C 14 234 36838 70.76 2118 2132 490.4
C 13 61 15811 27.89 2118 2132 490.4
C 12 4 9995 16.03 2118 2132 490.4
D 2 14 857193 1704.59 2095 2037 501.7
D 11 129 666380 1324.24 2095 2037 501.7
D 1 52 654511 1300.58 2095 2037 501.7

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