ASTROSAT CZTI

Data Quality Report

Orbit 03474

Creation date: 2024-06-27T14:29:52.252069
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/AS1G05_245T01_9000000460_03474cztM0_level2.evt modeM0/AS1G05_245T01_9000000460_03474cztM0_level2_quad_clean.evt
Size (bytes)450,129,60088,364,160
Size429.3 MB 84.3 MB
Events in quadrant A3,749,631549,477
Events in quadrant B3,349,081563,108
Events in quadrant C3,056,025574,036
Events in quadrant D3,047,571547,754

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015593135
B014119134
C013442134
D013685134

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63212143.385540%
B6321891.408005%
C6321801.265623%
D6321991.566208%

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 8861 6323 55 55 0.62% 0.87%
B 8861 6323 11 11 0.12% 0.17%
C 8861 6322 1 1 0.01% 0.02%
D 8861 6323 39 39 0.44% 0.62%

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 0 118 323976 2100.73 756 742 153.9
A 15 234 320513 2078.22 756 742 153.9
A 0 50 110842 715.55 756 742 153.9
B 15 204 200011 1341.95 775 757 148.5
B 2 249 69706 464.36 775 757 148.5
B 15 85 46024 304.87 775 757 148.5
C 12 4 24971 138.28 762 770 175.0
C 1 192 14231 76.92 762 770 175.0
C 15 208 13531 72.92 762 770 175.0
D 2 107 64693 360.65 753 736 177.3
D 13 223 43183 239.36 753 736 177.3
D 13 46 40854 226.22 753 736 177.3

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
Veto Counter