ASTROSAT CZTI

Data Quality Report

Orbit 50818

Creation date: 2025-02-24T09:36:17.595292
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_001T01_9000006450_50818cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50818cztM0_level2_quad_clean.evt
Size (bytes)711,486,720109,932,480
Size678.5 MB 104.8 MB
Events in quadrant A7,295,842678,222
Events in quadrant B4,162,990815,424
Events in quadrant C6,313,797672,634
Events in quadrant D7,939,176600,702

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0272870
B0182681
C0245530
D0291910

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A807386910.764276%
B8073821.015731%
C80737248.968165%
D807395711.854329%

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 8073 8073 806 806 9.98% 9.98%
B 8073 8073 43 43 0.53% 0.53%
C 8073 8073 433 433 5.36% 5.36%
D 8073 8073 833 833 10.32% 10.32%

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 6 161 2087348 10407.35 811 791 200.5
A 4 191 823807 4105.05 811 791 200.5
A 4 3 154549 766.91 811 791 200.5
B 5 185 226212 1256.77 849 819 179.3
B 4 170 116785 646.61 849 819 179.3
B 8 128 77159 425.66 849 819 179.3
C 4 210 981834 4421.94 807 800 221.9
C 15 237 417195 1876.87 807 800 221.9
C 1 3 321866 1447.18 807 800 221.9
D 15 123 950288 4385.88 776 749 216.5
D 10 172 452682 2087.46 776 749 216.5
D 2 249 429439 1980.1 776 749 216.5

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