ASTROSAT CZTI

Data Quality Report

Orbit 12876

Creation date: 2024-06-27T16:33:26.669436
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_041T01_9000001892_12876cztM0_level2.evt modeM0/AS1G08_041T01_9000001892_12876cztM0_level2_quad_clean.evt
Size (bytes)839,931,84098,804,160
Size801.0 MB 94.2 MB
Events in quadrant A4,149,213640,211
Events in quadrant B10,649,346509,218
Events in quadrant C3,939,630647,324
Events in quadrant D6,122,729602,432

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01740
B01740
C01740
D01740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0177723
B0374042
C0172942
D0239332

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8526340.398780%
B8526276832.465400%
C8526290.340136%
D85263834.492142%

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 10137 8529 4 4 0.04% 0.05%
B 10137 8529 1939 1939 19.13% 22.73%
C 10137 8529 0 0 0.00% 0.00%
D 10137 8529 304 304 3.00% 3.56%

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 55905 259.22 1032 1008 211.8
A 1 162 36519 167.68 1032 1008 211.8
A 1 178 19888 89.15 1032 1008 211.8
B 0 85 4465124 27080.44 860 838 164.9
B 4 239 2474008 15002.29 860 838 164.9
B 0 219 154007 929.13 860 838 164.9
C 13 61 7384 27.1 1010 1016 235.0
C 14 234 2794 7.57 1010 1016 235.0
C 3 202 2441 6.06 1010 1016 235.0
D 1 52 1724270 7172.35 990 961 240.3
D 8 195 319382 1325.26 990 961 240.3
D 4 95 184170 762.51 990 961 240.3

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
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter