ASTROSAT CZTI

Data Quality Report

Orbit 14497

Creation date: 2024-06-27T16:56:01.391694
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/AS1G08_066T01_9000002138_14497cztM0_level2.evt modeM0/AS1G08_066T01_9000002138_14497cztM0_level2_quad_clean.evt
Size (bytes)535,219,20096,960,960
Size510.4 MB 92.5 MB
Events in quadrant A3,806,492600,630
Events in quadrant B4,089,241603,213
Events in quadrant C3,932,844599,573
Events in quadrant D3,842,983582,417

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163633
B0171552
C0163462
D0169472

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79251301.640379%
B79251762.220820%
C7925921.160883%
D79251211.526814%

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 9336 7928 3 3 0.03% 0.04%
B 9336 7928 11 11 0.12% 0.14%
C 9336 7928 0 0 0.00% 0.00%
D 9336 7928 14 14 0.15% 0.18%

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 12 189 67830 340.98 960 936 196.2
A 4 2 27067 133.2 960 936 196.2
A 8 15 15443 73.95 960 936 196.2
B 0 189 78763 422.48 953 927 184.2
B 0 219 67178 359.6 953 927 184.2
B 0 229 54051 288.35 953 927 184.2
C 3 233 288533 1325.1 930 934 217.0
C 0 207 15231 65.87 930 934 217.0
C 13 61 6609 26.15 930 934 217.0
D 10 199 144489 613.96 931 904 233.9
D 2 234 34797 144.92 931 904 233.9
D 13 169 27717 114.65 931 904 233.9

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