ASTROSAT CZTI

Data Quality Report

Orbit 50584

Creation date: 2025-02-03T14:06:25.024592
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/AS1T05_239T01_9000006444_50584cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50584cztM0_level2_quad_clean.evt
Size (bytes)1,863,210,240225,630,720
Size1.7 GB 215.2 MB
Events in quadrant A10,056,1211,591,743
Events in quadrant B17,948,5021,529,958
Events in quadrant C24,672,0701,108,476
Events in quadrant D14,923,6341,375,688

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0419792
B0657932
C0857234
D0570032

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03600
B03600
C03600
D03600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A177655673.191669%
B17765270015.198424%
C17764558631.445620%
D1776414228.004954%

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 19300 17768 214 214 1.11% 1.20%
B 19300 17768 1687 1687 8.74% 9.49%
C 19299 17766 4752 4752 24.62% 26.75%
D 19299 17767 1102 1102 5.71% 6.20%

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 3 652431 1411.68 1857 1810 460.9
A 12 250 364048 785.96 1857 1810 460.9
A 4 249 315246 680.07 1857 1810 460.9
B 4 170 4654145 12476.83 1762 1698 372.9
B 7 0 2183701 5851.65 1762 1698 372.9
B 5 172 1457752 3904.81 1762 1698 372.9
C 15 196 9247748 20824.74 1585 1574 444.0
C 15 195 3742485 8425.49 1585 1574 444.0
C 15 157 1383697 3112.89 1585 1574 444.0
D 8 48 1321211 2697.72 1757 1694 489.1
D 2 249 1223085 2497.11 1757 1694 489.1
D 1 7 1201018 2451.99 1757 1694 489.1

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