ASTROSAT CZTI

Data Quality Report

Orbit 20170706_G05_238T01_9000001364_level2

Creation date: 2021-08-27T02:59:40.007054
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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_238T01_9000001364cztM0_level2_bc.evt modeM0/AS1G05_238T01_9000001364cztM0_level2_quad_clean.evt
Size (bytes)4,327,989,1201,474,983,360
Size4.0 GB 1.4 GB
Events in quadrant A26,538,2649,303,518
Events in quadrant B26,298,4299,306,524
Events in quadrant C25,256,7859,017,711
Events in quadrant D44,628,9978,653,342

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02720910
B02587550
C02548230
D03192420

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A025100
B025250
C025030
D025000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02050
B02040
C02050
D02060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12237220281.657242%
B12262217441.422257%
C12270712200.994238%
D12179064785.318992%

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 180134 127241 0 0 0.00% 0.00%
B 180130 127482 2 2 0.00% 0.00%
C 180129 127528 68 68 0.04% 0.05%
D 180136 126844 1110 1110 0.62% 0.88%

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 1210755 866.95 6419 6292 1389.3
A 13 14 236702 165.84 6419 6292 1389.3
A 1 161 154496 106.67 6419 6292 1389.3
B 0 214 537513 447.01 6407 6232 1188.5
B 4 80 373207 308.77 6407 6232 1188.5
B 0 219 195272 159.06 6407 6232 1188.5
C 9 68 978122 732.87 6159 6079 1326.3
C 14 234 112440 80.19 6159 6079 1326.3
C 13 61 37609 23.77 6159 6079 1326.3
D 1 52 13183367 8920.55 6074 5887 1477.2
D 8 195 2591693 1750.47 6074 5887 1477.2
D 13 122 2319605 1566.28 6074 5887 1477.2

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