ASTROSAT CZTI

Data Quality Report

Orbit 20170727_G07_028T01_9000001406_level2

Creation date: 2017-09-24T12:12:22.183271
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/AS1G07_028T01_9000001406cztM0_level2.evt modeM0/AS1G07_028T01_9000001406cztM0_level2_quad_clean.evt
Size (bytes)866,787,840163,782,720
Size826.6 MB 156.2 MB
Events in quadrant A6,306,0781,015,936
Events in quadrant B6,407,7211,035,945
Events in quadrant C6,126,6531,007,485
Events in quadrant D6,490,791963,894

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0278190
B0279930
C0276860
D0287300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02760
B02760
C02760
D02760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A135661801.326847%
B135661801.326847%
C135661250.921421%
D135661361.002506%

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 14626 13568 4 4 0.03% 0.03%
B 14626 13568 10 10 0.07% 0.07%
C 14626 13568 21 21 0.14% 0.15%
D 14626 13568 19 19 0.13% 0.14%

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 13 251 77977 234.13 1595 1557 326.4
A 15 239 53966 160.57 1595 1557 326.4
A 14 111 40617 119.67 1595 1557 326.4
B 4 81 132569 424.14 1596 1553 308.9
B 0 229 48324 151.41 1596 1553 308.9
B 12 111 37130 115.18 1596 1553 308.9
C 10 22 54993 148.03 1553 1561 360.9
C 9 221 13047 31.82 1553 1561 360.9
C 13 61 11538 27.64 1553 1561 360.9
D 1 52 226006 565.09 1530 1498 397.3
D 10 253 151583 377.77 1530 1498 397.3
D 8 195 100183 248.39 1530 1498 397.3

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
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter