ASTROSAT CZTI

Data Quality Report

Orbit 17023

Creation date: 2024-06-27T17:30:55.871193
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_206T01_9000002528_17023cztM0_level2.evt modeM0/AS1A05_206T01_9000002528_17023cztM0_level2_quad_clean.evt
Size (bytes)420,007,680100,440,000
Size400.6 MB 95.8 MB
Events in quadrant A3,076,243659,995
Events in quadrant B3,330,813674,247
Events in quadrant C2,990,379660,328
Events in quadrant D2,930,042643,824

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127821
B0135231
C0122411
D0124001

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A57771302.250303%
B57771212.094513%
C5777791.367492%
D5778420.726895%

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 7038 5779 94 94 1.34% 1.63%
B 7038 5779 45 45 0.64% 0.78%
C 7038 5778 0 0 0.00% 0.00%
D 7039 5780 10 10 0.14% 0.17%

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 322472 2257.34 707 692 142.5
A 4 2 30764 210.96 707 692 142.5
A 12 189 7475 47.58 707 692 142.5
B 3 64 210142 1582.1 712 693 132.4
B 7 220 136758 1027.79 712 693 132.4
B 0 189 65286 487.91 712 693 132.4
C 3 233 124395 760.27 704 708 162.7
C 14 238 110455 674.58 704 708 162.7
C 5 112 5397 28.82 704 708 162.7
D 1 52 116173 674.73 710 690 171.2
D 10 70 61295 354.1 710 690 171.2
D 12 110 27264 155.26 710 690 171.2

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