ASTROSAT CZTI

Data Quality Report

Orbit 24669

Creation date: 2024-06-27T19:08:35.025707
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/AS1T03_191T01_9000003618_24669cztM0_level2.evt modeM0/AS1T03_191T01_9000003618_24669cztM0_level2_quad_clean.evt
Size (bytes)504,181,440137,206,080
Size480.8 MB 130.8 MB
Events in quadrant A3,370,168939,086
Events in quadrant B3,529,592938,053
Events in quadrant C3,378,777892,780
Events in quadrant D4,499,124882,135

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148461
B0151581
C0148581
D0181271

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7230801.106501%
B72311171.618033%
C7231981.355276%
D72311472.032914%

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 7480 7231 1 1 0.01% 0.01%
B 7481 7232 8 8 0.11% 0.11%
C 7481 7232 2 2 0.03% 0.03%
D 7481 7232 66 66 0.88% 0.91%

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 15 223 36390 206.25 864 845 172.3
A 13 254 12506 67.66 864 845 172.3
A 3 137 7894 40.9 864 845 172.3
B 7 205 68569 416.87 855 833 162.5
B 7 202 38194 229.93 855 833 162.5
B 0 190 29929 179.06 855 833 162.5
C 14 238 130834 686.59 816 821 189.4
C 5 112 18300 92.31 816 821 189.4
C 10 91 12888 63.72 816 821 189.4
D 1 52 1252720 6217.21 830 806 201.4
D 8 195 56233 275.26 830 806 201.4
D 2 234 29971 144.84 830 806 201.4

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