ASTROSAT CZTI

Data Quality Report

Orbit 24048

Creation date: 2024-06-27T19:01:32.824302
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/AS1A07_165T01_9000003558_24048cztM0_level2.evt modeM0/AS1A07_165T01_9000003558_24048cztM0_level2_quad_clean.evt
Size (bytes)529,205,760128,041,920
Size504.7 MB 122.1 MB
Events in quadrant A3,106,537868,515
Events in quadrant B3,650,429879,189
Events in quadrant C3,415,363838,615
Events in quadrant D5,390,618814,774

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139111
B0148631
C0142461
D0207543

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6844280.409117%
B6844450.657510%
C6844550.803624%
D68431071.563642%

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 7254 6845 0 0 0.00% 0.00%
B 7254 6845 5 5 0.07% 0.07%
C 7254 6845 0 0 0.00% 0.00%
D 7253 6844 101 101 1.39% 1.48%

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 3 1 14696 85.68 801 780 162.4
A 13 254 10803 61.71 801 780 162.4
A 3 137 7079 38.78 801 780 162.4
B 0 197 406495 2698.72 800 781 150.3
B 0 189 47936 313.66 800 781 150.3
B 14 207 26363 170.17 800 781 150.3
C 7 247 290644 1630.82 765 769 177.7
C 14 238 121239 677.76 765 769 177.7
C 3 233 9307 48.03 765 769 177.7
D 8 195 2243344 11991.47 771 749 187.0
D 12 233 114634 608.96 771 749 187.0
D 1 52 48548 255.59 771 749 187.0

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