ASTROSAT CZTI

Data Quality Report

Orbit 20180716_G08_061T03_9000002228_level2

Creation date: 2018-07-17T10:32:59.871010
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/AS1G08_061T03_9000002228cztM0_level2_bc.evt modeM0/AS1G08_061T03_9000002228cztM0_level2_quad_clean.evt
Size (bytes)423,843,840159,301,440
Size404.2 MB 151.9 MB
Events in quadrant A2,643,1121,008,271
Events in quadrant B2,912,8911,010,409
Events in quadrant C3,714,885984,827
Events in quadrant D2,706,138956,776

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02520
B02520
C02520
D02520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0265430
B0274710
C0312800
D0271390

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A124944113.289579%
B124945164.129982%
C124943372.697295%
D124943933.145510%

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 12785 12494 4 4 0.03% 0.03%
B 12785 12494 45 45 0.35% 0.36%
C 12785 12494 0 0 0.00% 0.00%
D 12785 12494 17 17 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 12 189 128646 920.54 620 605 139.1
A 15 239 119646 855.84 620 605 139.1
A 13 248 4643 29.03 620 605 139.1
B 3 64 286850 2364.55 622 604 121.1
B 4 48 57130 466.94 622 604 121.1
B 3 209 47217 385.05 622 604 121.1
C 3 233 1315717 9708.16 603 594 135.5
C 0 207 11349 79.39 603 594 135.5
C 3 234 6137 40.92 603 594 135.5
D 13 172 152312 1050.73 612 587 144.4
D 2 234 49296 337.32 612 587 144.4
D 2 120 35057 238.71 612 587 144.4

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