ASTROSAT CZTI

Data Quality Report

Orbit 31995

Creation date: 2024-06-27T20:35:02.621669
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_010T03_9000004676_31995cztM0_level2.evt modeM0/AS1C06_010T03_9000004676_31995cztM0_level2_quad_clean.evt
Size (bytes)428,126,40097,902,720
Size408.3 MB 93.4 MB
Events in quadrant A2,419,976673,306
Events in quadrant B4,159,477662,992
Events in quadrant C3,324,094630,200
Events in quadrant D2,716,057641,056

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105601
B0161871
C0132751
D0118262

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5099400.784468%
B50992534.961757%
C50993005.883507%
D5098921.804629%

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 5309 5099 0 0 0.00% 0.00%
B 5309 5099 82 82 1.54% 1.61%
C 5309 5099 26 26 0.49% 0.51%
D 5308 5098 22 22 0.41% 0.43%

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 13 6 12314 92.71 623 611 126.2
A 13 254 8510 62.58 623 611 126.2
A 3 137 6418 46.0 623 611 126.2
B 6 159 1424339 12103.61 611 595 117.6
B 10 245 233553 1980.44 611 595 117.6
B 5 172 63735 536.77 611 595 117.6
C 3 233 714011 5185.55 587 588 137.6
C 14 238 109047 788.34 587 588 137.6
C 0 10 65750 473.63 587 588 137.6
D 7 238 188886 1295.91 605 587 145.3
D 8 195 93892 642.14 605 587 145.3
D 2 250 61912 422.05 605 587 145.3

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