ASTROSAT CZTI

Data Quality Report

Orbit 50802

Creation date: 2025-02-18T12:21:23.565034
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_50802cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50802cztM0_level2_quad_clean.evt
Size (bytes)651,323,520108,077,760
Size621.2 MB 103.1 MB
Events in quadrant A5,210,445692,985
Events in quadrant B4,013,902783,110
Events in quadrant C7,477,514642,760
Events in quadrant D6,811,886618,098

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0208521
B0174661
C0276271
D0256031

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76984475.806703%
B76981221.584827%
C769877410.054560%
D76985827.560405%

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 7713 7699 405 405 5.25% 5.26%
B 7713 7699 67 67 0.87% 0.87%
C 7713 7699 765 765 9.92% 9.94%
D 7713 7699 555 555 7.20% 7.21%

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 14 254 685545 3450.69 803 784 198.4
A 4 249 560944 2822.79 803 784 198.4
A 4 3 239233 1201.61 803 784 198.4
B 8 128 196570 1129.3 817 787 173.4
B 4 206 99026 566.66 817 787 173.4
B 10 247 89798 513.43 817 787 173.4
C 5 10 2669320 12298.26 784 776 217.0
C 1 44 409732 1884.72 784 776 217.0
C 13 3 275601 1266.56 784 776 217.0
D 10 172 792319 3668.26 773 745 215.8
D 2 216 745201 3449.91 773 745 215.8
D 2 249 318036 1470.37 773 745 215.8

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