ASTROSAT CZTI

Data Quality Report

Orbit 17372

Creation date: 2024-06-27T17:35:37.056047
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/AS1A05_012T02_9000002566_17372cztM0_level2.evt modeM0/AS1A05_012T02_9000002566_17372cztM0_level2_quad_clean.evt
Size (bytes)661,677,12088,295,040
Size631.0 MB 84.2 MB
Events in quadrant A3,002,947595,728
Events in quadrant B3,311,962594,972
Events in quadrant C3,116,650573,438
Events in quadrant D10,177,771466,485

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131412
B0140042
C0134062
D0346092

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6345590.929866%
B63451372.159180%
C63451402.206462%
D6345248939.227738%

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 7040 6347 1 1 0.01% 0.02%
B 7040 6347 16 16 0.23% 0.25%
C 7040 6346 0 0 0.00% 0.00%
D 7040 6347 2192 2192 31.14% 34.54%

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 15 174 8589 49.5 779 762 158.1
A 0 226 6920 38.95 779 762 158.1
A 12 194 5680 31.11 779 762 158.1
B 0 189 73789 494.0 777 755 147.8
B 4 216 61589 411.48 777 755 147.8
B 15 35 35316 233.77 777 755 147.8
C 14 238 115594 666.86 745 747 172.2
C 3 233 90481 521.04 745 747 172.2
C 13 61 5502 27.61 745 747 172.2
D 11 176 6208664 41860.06 615 600 148.3
D 13 232 704361 4745.35 615 600 148.3
D 1 52 529877 3568.83 615 600 148.3

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