ASTROSAT CZTI

Data Quality Report

Orbit 24702

Creation date: 2024-06-27T19:08:55.669392
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/AS1T03_191T01_9000003618_24702cztM0_level2.evt modeM0/AS1T03_191T01_9000003618_24702cztM0_level2_quad_clean.evt
Size (bytes)1,078,608,960288,907,200
Size1.0 GB 275.5 MB
Events in quadrant A7,072,1401,972,082
Events in quadrant B7,574,9681,977,735
Events in quadrant C7,558,3991,877,432
Events in quadrant D9,407,0691,849,672

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0315693
B0326933
C0319723
D0386933

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03140
B03140
C03140
D03140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15580570.365854%
B155791220.783105%
C155791210.776687%
D155791480.949997%

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 16665 15581 1 1 0.01% 0.01%
B 16664 15580 37 37 0.22% 0.24%
C 16664 15580 0 0 0.00% 0.00%
D 16664 15580 91 91 0.55% 0.58%

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 13 254 26051 66.41 1829 1787 365.4
A 10 255 19357 48.09 1829 1787 365.4
A 3 137 16864 41.27 1829 1787 365.4
B 4 80 170938 498.45 1809 1766 339.4
B 3 64 126102 366.34 1809 1766 339.4
B 0 189 61303 175.42 1809 1766 339.4
C 7 247 438830 1078.25 1742 1753 405.4
C 14 238 279398 684.94 1742 1753 405.4
C 5 112 18225 40.64 1742 1753 405.4
D 1 52 1025596 2392.12 1773 1721 428.0
D 7 238 888108 2070.9 1773 1721 428.0
D 8 195 660379 1538.85 1773 1721 428.0

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