ASTROSAT CZTI

Data Quality Report

Orbit 23486

Creation date: 2024-06-27T18:55:05.054829
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/AS1A07_100T02_9000003476_23486cztM0_level2.evt modeM0/AS1A07_100T02_9000003476_23486cztM0_level2_quad_clean.evt
Size (bytes)1,153,664,640239,163,840
Size1.1 GB 228.1 MB
Events in quadrant A7,127,0041,589,211
Events in quadrant B7,830,9981,598,193
Events in quadrant C7,946,9481,522,101
Events in quadrant D10,991,1421,470,278

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03140
B03140
C03140
D03140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0314112
B0331472
C0334852
D0432682

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A154201160.752270%
B154201941.258106%
C154202951.913100%
D1542010476.789883%

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 17240 15420 3 3 0.02% 0.02%
B 17240 15420 23 23 0.13% 0.15%
C 17239 15421 109 109 0.63% 0.71%
D 17240 15422 867 867 5.03% 5.62%

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 13 254 25946 65.11 1838 1793 371.0
A 10 253 18509 45.06 1838 1793 371.0
A 3 137 16250 38.97 1838 1793 371.0
B 0 189 392190 1131.54 1831 1783 345.0
B 0 230 66712 188.19 1831 1783 345.0
B 0 229 47406 132.23 1831 1783 345.0
C 2 16 570260 1387.48 1762 1771 409.7
C 14 238 279699 678.32 1762 1771 409.7
C 7 247 93065 222.82 1762 1771 409.7
D 1 52 3489402 8303.91 1746 1700 420.0
D 9 35 412491 978.06 1746 1700 420.0
D 13 104 108061 253.24 1746 1700 420.0

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