ASTROSAT CZTI

Data Quality Report

Orbit 39249

Creation date: 2024-06-27T22:02:18.655638
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/AS1A12_093T02_9000005452_39249cztM0_level2.fits modeM0/AS1A12_093T02_9000005452_39249cztM0_level2_quad_clean.evt
Size (bytes)945,097,920175,818,240
Size901.3 MB 167.7 MB
Events in quadrant A6,405,2361,230,620
Events in quadrant B5,851,5761,257,807
Events in quadrant C5,237,9231,203,132
Events in quadrant D16,628,307861,788

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260265
B0247773
C0224553
D0571533

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02240
B02240
C02240
D02240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0410
C0410
D0410

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A111282532.273544%
B11128990.889648%
C11128100.089863%
D11128342730.796190%

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 16187 11131 170 170 1.05% 1.53%
B 16187 11131 52 52 0.32% 0.47%
C 16187 11131 2 2 0.01% 0.02%
D 16187 11131 2931 2931 18.11% 26.33%

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 13 248 865796 3459.6 1228 1204 249.9
A 10 83 787483 3146.24 1228 1204 249.9
A 13 254 15514 57.26 1228 1204 249.9
B 5 172 560427 2364.78 1226 1193 236.5
B 5 184 187997 789.92 1226 1193 236.5
B 0 190 185264 778.36 1226 1193 236.5
C 15 214 496509 1758.2 1206 1211 281.7
C 3 233 20095 67.03 1206 1211 281.7
C 0 10 17688 58.49 1206 1211 281.7
D 12 235 10657037 40832.85 1066 1034 261.0
D 5 222 862270 3300.18 1066 1034 261.0
D 12 227 600226 2296.05 1066 1034 261.0

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