ASTROSAT CZTI

Data Quality Report

Orbit 13303

Creation date: 2024-06-27T16:39:01.446837
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/AS1G08_023T01_9000001978_13303cztM0_level2.evt modeM0/AS1G08_023T01_9000001978_13303cztM0_level2_quad_clean.evt
Size (bytes)469,975,680102,942,720
Size448.2 MB 98.2 MB
Events in quadrant A3,184,385674,315
Events in quadrant B3,297,095699,777
Events in quadrant C3,026,012672,849
Events in quadrant D4,286,702619,851

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136773
B0139592
C0133292
D0172812

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6467300.463894%
B6467610.943250%
C6467180.278336%
D64672694.159579%

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 7723 6469 1 1 0.01% 0.02%
B 7723 6469 3 3 0.04% 0.05%
C 7723 6469 3 3 0.04% 0.05%
D 7723 6469 196 196 2.54% 3.03%

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 8 15 114693 717.54 786 772 158.8
A 1 162 22927 139.54 786 772 158.8
A 9 143 8448 48.35 786 772 158.8
B 3 64 51943 344.27 800 778 148.6
B 0 214 25333 165.22 800 778 148.6
B 4 142 24117 157.04 800 778 148.6
C 14 234 10577 55.32 770 774 177.2
C 15 208 6666 33.25 770 774 177.2
C 13 61 5766 28.17 770 774 177.2
D 1 52 709563 3998.26 744 722 177.3
D 5 222 461835 2600.94 744 722 177.3
D 8 195 116641 653.85 744 722 177.3

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