ASTROSAT CZTI

Data Quality Report

Orbit 30815

Creation date: 2024-06-27T20:19:56.382481
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/AS1C06_003T01_9000004452_30815cztM0_level2.evt modeM0/AS1C06_003T01_9000004452_30815cztM0_level2_quad_clean.evt
Size (bytes)626,434,560112,524,480
Size597.4 MB 107.3 MB
Events in quadrant A3,219,500769,367
Events in quadrant B5,360,151768,954
Events in quadrant C3,554,815739,749
Events in quadrant D6,405,649684,088

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137163
B0204222
C0146482
D0236302

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6391440.688468%
B63912003.129401%
C63911722.691285%
D63915338.339853%

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 7571 6392 26 26 0.34% 0.41%
B 7571 6391 110 110 1.45% 1.72%
C 7571 6391 47 47 0.62% 0.74%
D 7571 6392 329 329 4.35% 5.15%

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 13 168406 1078.52 787 774 155.4
A 13 254 12792 77.32 787 774 155.4
A 12 96 12775 77.21 787 774 155.4
B 6 159 1870980 12798.53 783 764 146.1
B 5 172 308785 2107.89 783 764 146.1
B 0 155 23853 158.01 783 764 146.1
C 0 10 228223 1280.12 759 764 177.7
C 3 233 220480 1236.54 759 764 177.7
C 14 238 123256 689.37 759 764 177.7
D 8 195 2908667 16594.34 731 716 175.2
D 12 218 244444 1390.84 731 716 175.2
D 2 250 190917 1085.39 731 716 175.2

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