ASTROSAT CZTI

Data Quality Report

Orbit 18927

Creation date: 2024-06-27T17:56:39.547426
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_163T01_9000002820_18927cztM0_level2.evt modeM0/AS1A05_163T01_9000002820_18927cztM0_level2_quad_clean.evt
Size (bytes)517,697,28094,052,160
Size493.7 MB 89.7 MB
Events in quadrant A3,556,535601,780
Events in quadrant B4,517,794594,563
Events in quadrant C3,281,523602,712
Events in quadrant D3,866,670580,653

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148122
B0179642
C0139722
D0161402

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6714440.655347%
B67144757.074769%
C6714640.953232%
D67142283.395889%

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 7659 6715 16 16 0.21% 0.24%
B 7659 6715 180 180 2.35% 2.68%
C 7659 6715 0 0 0.00% 0.00%
D 7659 6715 128 128 1.67% 1.91%

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 14 235 424774 2572.63 812 795 164.8
A 13 254 9205 51.03 812 795 164.8
A 0 226 7026 37.81 812 795 164.8
B 3 112 1234928 8067.62 794 775 153.0
B 0 189 65910 425.79 794 775 153.0
B 7 220 42742 274.34 794 775 153.0
C 14 238 122305 659.81 787 794 184.2
C 3 233 76221 409.57 787 794 184.2
C 9 221 8856 43.78 787 794 184.2
D 12 218 450780 2369.59 780 758 189.9
D 1 52 237566 1246.91 780 758 189.9
D 7 238 87425 456.34 780 758 189.9

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