ASTROSAT CZTI

Data Quality Report

Orbit 18196

Creation date: 2024-06-27T17:46:34.442048
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/AS1A05_160T02_9000002710_18196cztM0_level2.evt modeM0/AS1A05_160T02_9000002710_18196cztM0_level2_quad_clean.evt
Size (bytes)513,970,56069,762,240
Size490.2 MB 66.5 MB
Events in quadrant A3,445,522418,766
Events in quadrant B3,590,924420,946
Events in quadrant C3,725,535404,481
Events in quadrant D4,350,283402,310

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141632
B0145952
C0150212
D0172783

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66801362.035928%
B66801482.215569%
C66801922.874251%
D66792053.069322%

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 7805 6681 0 0 0.00% 0.00%
B 7805 6681 15 15 0.19% 0.22%
C 7805 6681 29 29 0.37% 0.43%
D 7804 6680 73 73 0.94% 1.09%

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 15 174 10414 53.11 893 875 179.6
A 0 226 7907 39.15 893 875 179.6
A 12 194 6774 32.84 893 875 179.6
B 5 172 57845 339.4 878 858 167.9
B 4 171 26539 152.95 878 858 167.9
B 0 229 20081 114.49 878 858 167.9
C 4 254 270565 1367.76 848 855 197.2
C 14 238 131490 662.48 848 855 197.2
C 8 128 10304 47.92 848 855 197.2
D 7 238 577535 2699.43 870 845 213.6
D 5 222 192283 896.1 870 845 213.6
D 10 70 163738 762.49 870 845 213.6

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