ASTROSAT CZTI

Data Quality Report

Orbit 25190

Creation date: 2024-06-27T19:14:53.693852
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_027T01_9000003690_25190cztM0_level2.evt modeM0/AS1A07_027T01_9000003690_25190cztM0_level2_quad_clean.evt
Size (bytes)525,323,52093,312,000
Size501.0 MB 89.0 MB
Events in quadrant A3,243,357600,288
Events in quadrant B3,589,825599,580
Events in quadrant C4,500,495570,269
Events in quadrant D4,102,734569,774

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141720
B0150580
C0179040
D0167610

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6973260.372867%
B69741331.907083%
C69741071.534270%
D6974650.932033%

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 7378 6974 0 0 0.00% 0.00%
B 7379 6975 55 55 0.75% 0.79%
C 7379 6975 0 0 0.00% 0.00%
D 7379 6975 28 28 0.38% 0.40%

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 11769 64.58 841 823 169.5
A 3 137 7786 41.08 841 823 169.5
A 0 226 7156 37.36 841 823 169.5
B 3 64 248223 1555.94 832 811 159.0
B 0 189 36851 226.65 832 811 159.0
B 5 235 21332 129.05 832 811 159.0
C 7 247 1221372 6473.73 803 807 188.5
C 14 238 131040 690.74 803 807 188.5
C 8 208 11060 54.38 803 807 188.5
D 8 195 436204 2208.26 815 792 197.2
D 12 235 364929 1846.78 815 792 197.2
D 2 244 131811 664.48 815 792 197.2

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