ASTROSAT CZTI

Data Quality Report

Orbit 46936

Creation date: 2024-06-27T23:29:38.814720
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/AS1A13_077T01_9000006286_46936cztM0_level2.fits modeM0/AS1A13_077T01_9000006286_46936cztM0_level2_quad_clean.evt
Size (bytes)531,126,72098,464,320
Size506.5 MB 93.9 MB
Events in quadrant A6,052,926659,478
Events in quadrant B5,866,336657,113
Events in quadrant C2,894,553653,615
Events in quadrant D4,373,815584,691

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0226870
B0217280
C0131110
D0171130

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61072023.307680%
B61074817.876208%
C6108891.457105%
D61083275.353635%

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 7147 6107 8 8 0.11% 0.13%
B 7146 6106 335 335 4.69% 5.49%
C 7148 6108 37 37 0.52% 0.61%
D 7148 6108 251 251 3.51% 4.11%

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 10 83 3326083 22931.63 693 678 145.0
A 13 6 16466 108.87 693 678 145.0
A 13 248 10174 65.48 693 678 145.0
B 3 112 2759654 20637.2 677 657 133.7
B 5 29 78238 580.3 677 657 133.7
B 15 36 56814 420.05 677 657 133.7
C 14 254 242729 1503.76 679 682 161.0
C 13 61 4468 23.52 679 682 161.0
C 3 233 3545 17.79 679 682 161.0
D 13 249 567860 3348.43 673 651 169.4
D 1 52 349430 2058.96 673 651 169.4
D 10 181 279141 1644.02 673 651 169.4

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