ASTROSAT CZTI

Data Quality Report

Orbit 19427

Creation date: 2024-06-27T18:02:49.039722
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_221T01_9000002888_19427cztM0_level2.evt modeM0/AS1A05_221T01_9000002888_19427cztM0_level2_quad_clean.evt
Size (bytes)498,576,96078,946,560
Size475.5 MB 75.3 MB
Events in quadrant A3,279,716492,644
Events in quadrant B3,406,422498,970
Events in quadrant C3,724,788481,018
Events in quadrant D4,245,815462,915

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137012
B0139762
C0150182
D0169112

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6525771.180077%
B6525971.486590%
C65242153.295524%
D65242794.276517%

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 7510 6526 0 0 0.00% 0.00%
B 7510 6525 9 9 0.12% 0.14%
C 7509 6525 20 20 0.27% 0.31%
D 7509 6525 193 193 2.57% 2.96%

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 13 254 10320 55.57 847 832 170.7
A 0 226 7403 38.49 847 832 170.7
A 3 137 6430 32.79 847 832 170.7
B 7 220 49171 302.44 842 823 159.9
B 0 198 19325 115.74 842 823 159.9
B 12 111 18539 110.82 842 823 159.9
C 9 221 335202 1773.64 804 811 188.5
C 14 238 127270 670.75 804 811 188.5
C 0 207 89338 469.56 804 811 188.5
D 12 218 583180 2959.44 812 791 196.8
D 7 238 563622 2860.06 812 791 196.8
D 2 234 22939 112.55 812 791 196.8

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