ASTROSAT CZTI

Data Quality Report

Orbit 09021

Creation date: 2024-06-27T15:40:10.274784
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/AS1G07_029T02_9000001256_09021cztM0_level2.evt modeM0/AS1G07_029T02_9000001256_09021cztM0_level2_quad_clean.evt
Size (bytes)552,291,84086,806,080
Size526.7 MB 82.8 MB
Events in quadrant A6,104,418524,932
Events in quadrant B3,437,400557,635
Events in quadrant C3,052,940545,817
Events in quadrant D3,674,513530,356

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0229392
B0145941
C0139331
D0154951

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A674277811.539602%
B67421041.542569%
C6742490.726787%
D67421121.661228%

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 6967 6743 431 431 6.19% 6.39%
B 6967 6743 11 11 0.16% 0.16%
C 6967 6743 0 0 0.00% 0.00%
D 6967 6743 44 44 0.63% 0.65%

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 5 2835657 17600.83 783 765 161.1
A 1 162 112512 693.79 783 765 161.1
A 5 16 39894 242.93 783 765 161.1
B 4 48 69398 443.04 802 782 154.9
B 4 80 62762 400.19 802 782 154.9
B 0 214 44066 279.47 802 782 154.9
C 8 128 9919 50.06 778 781 182.5
C 13 61 5902 28.05 778 781 182.5
C 8 112 5782 27.4 778 781 182.5
D 6 225 195159 946.29 778 756 205.4
D 7 71 171971 833.41 778 756 205.4
D 13 104 108292 523.45 778 756 205.4

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