ASTROSAT CZTI

Data Quality Report

Orbit 50986

Creation date: 2025-03-02T14:44:57.990954
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_001T02_9000006452_50986cztM0_level2.fits modeM0/AS1C07_001T02_9000006452_50986cztM0_level2_quad_clean.evt
Size (bytes)571,078,08084,839,040
Size544.6 MB 80.9 MB
Events in quadrant A4,591,339568,654
Events in quadrant B4,996,524605,068
Events in quadrant C3,720,661547,721
Events in quadrant D7,367,351429,350

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0177631
B0190851
C0152731
D0260801

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59852594.327485%
B59844627.720588%
C59842353.927139%
D5985125821.019215%

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 7115 5985 156 156 2.19% 2.61%
B 7114 5984 300 300 4.22% 5.01%
C 7114 5985 174 174 2.45% 2.91%
D 7115 5985 1248 1248 17.54% 20.85%

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 12 3 886486 5648.71 628 614 156.8
A 8 43 222017 1411.76 628 614 156.8
A 7 206 196565 1249.47 628 614 156.8
B 4 81 1941581 14953.65 615 595 129.8
B 12 32 191844 1473.41 615 595 129.8
B 10 247 64821 494.81 615 595 129.8
C 1 44 525818 3168.77 601 597 165.7
C 15 147 201171 1210.11 601 597 165.7
C 4 5 141625 850.85 601 597 165.7
D 8 176 3387369 22129.86 546 527 153.0
D 10 181 460918 3008.23 546 527 153.0
D 12 191 319902 2086.82 546 527 153.0

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