ASTROSAT CZTI

Data Quality Report

Orbit 20160505_G05_002T02_9000000444_level2

Creation date: 2017-11-01T03:11:07.527035
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_002T02_9000000444cztM0_level2.evt modeM0/AS1G05_002T02_9000000444cztM0_level2_quad_clean.evt
Size (bytes)5,023,094,400882,426,240
Size4.7 GB 841.5 MB
Events in quadrant A34,576,5075,483,817
Events in quadrant B44,360,9915,566,541
Events in quadrant C34,546,7715,557,368
Events in quadrant D33,954,3095,354,848

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014100
B014100
C014100
D014100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01030
B01030
C01030
D01030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01529770
B01786390
C01520990
D01528700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6950520762.986835%
B6950515112.173944%
C6950513051.877563%
D6950514132.032947%

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 79671 69517 853 853 1.07% 1.23%
B 79671 69517 163 163 0.20% 0.23%
C 79671 69517 496 496 0.62% 0.71%
D 79671 69517 652 652 0.82% 0.94%

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 50 2364636 1483.11 7826 7650 1589.2
A 14 249 1114762 696.64 7826 7650 1589.2
A 0 118 767742 478.28 7826 7650 1589.2
B 15 204 11390918 7489.36 8003 7805 1519.9
B 2 249 1327915 868.55 8003 7805 1519.9
B 5 200 306956 196.82 8003 7805 1519.9
C 14 223 2491587 1416.19 7658 7673 1753.9
C 6 80 515960 289.8 7658 7673 1753.9
C 1 16 384990 215.12 7658 7673 1753.9
D 13 223 2031312 1103.15 7622 7377 1834.7
D 13 239 853228 461.03 7622 7377 1834.7
D 5 233 522826 280.95 7622 7377 1834.7

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