ASTROSAT CZTI

Data Quality Report

Orbit 50889

Creation date: 2025-02-24T04:11:21.520575
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/AS1C07_001T01_9000006450_50889cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50889cztM0_level2_quad_clean.evt
Size (bytes)819,417,600103,631,040
Size781.5 MB 98.8 MB
Events in quadrant A10,187,029630,654
Events in quadrant B5,055,791776,209
Events in quadrant C7,198,393625,573
Events in quadrant D7,285,227560,714

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0357301
B0204641
C0268731
D0270824

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7826170421.773575%
B78264665.954511%
C7826117415.001278%
D7825146318.696486%

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 7826 7826 1468 1468 18.76% 18.76%
B 7826 7826 279 279 3.57% 3.57%
C 7826 7824 777 777 9.93% 9.93%
D 7825 7821 570 570 7.28% 7.29%

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 4 4 5189555 26106.65 796 777 198.8
A 7 206 655780 3295.56 796 777 198.8
A 4 3 292602 1468.28 796 777 198.8
B 4 206 864806 4876.31 827 798 177.2
B 0 171 289416 1628.91 827 798 177.2
B 8 128 113708 637.24 827 798 177.2
C 1 29 2126644 10061.76 770 764 211.3
C 1 124 946111 4474.31 770 764 211.3
C 12 247 370782 1751.29 770 764 211.3
D 7 45 1837964 8778.23 753 727 209.3
D 2 249 470128 2242.77 753 727 209.3
D 1 47 319637 1523.73 753 727 209.3

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