ASTROSAT CZTI

Data Quality Report

Orbit 53915

Creation date: 2025-09-16T12:00:12.585333
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_53915cztM0_level2.fits modeM0/AS1A14_057T04_9000006508_53915cztM0_level2_quad_clean.evt
Size (bytes)2,216,350,080221,866,560
Size2.1 GB 211.6 MB
Events in quadrant A10,953,7991,741,529
Events in quadrant B13,322,3981,822,624
Events in quadrant C16,726,9811,446,024
Events in quadrant D39,589,972414,533

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0455573
B0527753
C0630553
D01304883

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03800
B03800
C03800
D03800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A187546773.609897%
B187559665.150626%
C18754270014.396929%
D187541450177.322171%

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 20059 18755 364 364 1.81% 1.94%
B 20060 18756 497 497 2.48% 2.65%
C 20058 18756 2016 2016 10.05% 10.75%
D 20058 18753 12422 12422 61.93% 66.24%

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 4 249 1205835 2362.15 2067 2008 509.6
A 10 253 641976 1255.74 2067 2008 509.6
A 15 174 601520 1176.36 2067 2008 509.6
B 5 250 2580827 6007.67 2018 1946 429.3
B 5 236 1504913 3501.26 2018 1946 429.3
B 5 185 350500 811.98 2018 1946 429.3
C 12 254 3191038 6134.64 1883 1862 519.9
C 1 241 2134034 4101.41 1883 1862 519.9
C 15 158 1389277 2668.81 1883 1862 519.9
D 8 176 33066572 121751.47 929 884 271.6
D 10 172 708191 2604.38 929 884 271.6
D 3 12 676186 2486.54 929 884 271.6

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