ASTROSAT CZTI

Data Quality Report

Orbit 44787

Creation date: 2024-06-27T23:06:33.133610
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_004T13_9000006022_44787cztM0_level2.fits modeM0/AS1A13_004T13_9000006022_44787cztM0_level2_quad_clean.evt
Size (bytes)1,529,760,960268,781,760
Size1.4 GB 256.3 MB
Events in quadrant A15,403,8911,831,340
Events in quadrant B9,581,1031,905,451
Events in quadrant C8,038,4181,865,018
Events in quadrant D22,192,3161,277,889

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0604823
B0411113
C0376713
D07838310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03680
B03680
C03680
D03680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1825510375.680635%
B182566623.626205%
C182561790.980500%
D18255478326.201041%

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 19765 18255 529 529 2.68% 2.90%
B 19766 18257 227 227 1.15% 1.24%
C 19766 18257 23 23 0.12% 0.13%
D 19764 18255 4250 4250 21.50% 23.28%

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 5260145 12684.96 1995 1951 414.5
A 15 223 1895454 4567.92 1995 1951 414.5
A 13 248 496027 1191.92 1995 1951 414.5
B 0 189 771230 1954.41 1992 1928 393.6
B 5 255 199070 500.84 1992 1928 393.6
B 10 245 155381 389.85 1992 1928 393.6
C 12 2 112383 238.2 1980 1990 463.4
C 1 3 63493 132.71 1980 1990 463.4
C 3 233 58471 121.87 1980 1990 463.4
D 13 187 6649398 15061.85 1770 1716 441.4
D 1 52 4805650 10884.42 1770 1716 441.4
D 5 235 911103 2060.43 1770 1716 441.4

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