ASTROSAT CZTI

Data Quality Report

Orbit 04128

Creation date: 2024-06-27T14:37:47.071755
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_195T01_9000000530_04128cztM0_level2.evt modeM0/AS1G05_195T01_9000000530_04128cztM0_level2_quad_clean.evt
Size (bytes)536,739,84092,563,200
Size511.9 MB 88.3 MB
Events in quadrant A3,807,501585,904
Events in quadrant B4,576,640574,097
Events in quadrant C3,259,883577,002
Events in quadrant D4,114,578556,679

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165343
B0186172
C0150702
D0177332

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73101241.696306%
B73103284.487004%
C7310160.218878%
D73101992.722298%

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 7975 7311 91 91 1.14% 1.24%
B 7975 7311 276 276 3.46% 3.78%
C 7975 7311 1 1 0.01% 0.01%
D 7975 7311 225 225 2.82% 3.08%

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 0 50 620100 3793.9 800 782 163.2
A 0 199 25794 153.22 800 782 163.2
A 0 118 22415 132.52 800 782 163.2
B 10 16 806445 5257.88 802 783 153.2
B 15 204 307541 2001.95 802 783 153.2
B 4 48 138144 896.44 802 783 153.2
C 9 144 205272 1118.2 779 781 182.9
C 10 65 8576 42.62 779 781 182.9
C 13 61 6724 32.5 779 781 182.9
D 12 212 400283 2162.96 762 737 184.7
D 4 95 387291 2092.63 762 737 184.7
D 12 227 184693 995.85 762 737 184.7

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