ASTROSAT CZTI

Data Quality Report

Orbit 53955

Creation date: 2025-09-20T13:47:17.412250
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/AS1A14_057T04_9000006508_53955cztM0_level2.fits modeM0/AS1A14_057T04_9000006508_53955cztM0_level2_quad_clean.evt
Size (bytes)837,403,200102,960,000
Size798.6 MB 98.2 MB
Events in quadrant A4,873,264749,492
Events in quadrant B4,398,360804,941
Events in quadrant C5,816,440662,660
Events in quadrant D15,282,000337,351

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0199950
B0187450
C0231570
D0510040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80972022.494751%
B80971581.951340%
C80978079.966654%
D8097451655.773743%

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 8097 8097 166 166 2.05% 2.05%
B 8097 8097 86 86 1.06% 1.06%
C 8097 8097 743 743 9.18% 9.18%
D 8097 8097 3869 3869 47.78% 47.78%

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 966055 4508.21 875 853 214.1
A 4 249 107878 499.89 875 853 214.1
A 0 8 107326 497.31 875 853 214.1
B 0 213 402669 2127.0 871 841 188.9
B 4 171 121390 638.1 871 841 188.9
B 4 81 83251 436.22 871 841 188.9
C 9 38 1437677 6551.78 797 790 219.3
C 13 3 456295 2076.97 797 790 219.3
C 12 249 266476 1211.45 797 790 219.3
D 8 176 10219265 60212.4 595 569 169.7
D 6 239 657965 3873.62 595 569 169.7
D 10 172 584628 3441.5 595 569 169.7

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