ASTROSAT CZTI

Data Quality Report

Orbit 46956

Creation date: 2024-06-27T23:29:54.274734
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_46956cztM0_level2.fits modeM0/AS1A13_077T01_9000006286_46956cztM0_level2_quad_clean.evt
Size (bytes)126,996,48021,041,280
Size121.1 MB 20.1 MB
Events in quadrant A1,360,049146,314
Events in quadrant B1,934,863116,332
Events in quadrant C572,953141,495
Events in quadrant D723,973130,685

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A051040
B067150
C027990
D031150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A136920.146092%
B136934925.493061%
C137040.291971%
D1370130.948905%

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 1369 1369 0 0 0.00% 0.00%
B 1369 1369 350 350 25.57% 25.57%
C 1370 1370 5 5 0.36% 0.36%
D 1370 1370 13 13 0.95% 0.95%

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 807660 25621.08 140 137 31.5
A 0 243 4739 146.01 140 137 31.5
A 13 254 2440 73.07 140 137 31.5
B 3 112 1197230 43262.75 130 127 27.7
B 5 32 105370 3803.43 130 127 27.7
B 4 171 80953 2921.01 130 127 27.7
C 3 233 15254 433.49 139 140 34.9
C 14 254 7754 218.38 139 140 34.9
C 12 250 1555 40.58 139 140 34.9
D 12 233 67368 1848.36 138 134 36.4
D 5 171 33731 923.63 138 134 36.4
D 1 47 29745 814.05 138 134 36.4

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