ASTROSAT CZTI

Data Quality Report

Orbit 31536

Creation date: 2024-06-27T20:29:40.980091
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/AS1A10_056T01_9000004598_31536cztM0_level2.evt modeM0/AS1A10_056T01_9000004598_31536cztM0_level2_quad_clean.evt
Size (bytes)531,676,80090,745,920
Size507.0 MB 86.5 MB
Events in quadrant A3,043,965591,642
Events in quadrant B5,122,459591,052
Events in quadrant C3,304,359563,628
Events in quadrant D4,196,623554,187

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01329313
B01990316
C01391313
D0168192

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6413400.623733%
B64141061.652635%
C64141271.980044%
D6419961.495560%

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 7374 6419 0 0 0.00% 0.00%
B 7374 6419 1 1 0.01% 0.02%
C 7375 6420 13 13 0.18% 0.20%
D 7374 6419 40 40 0.54% 0.62%

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 12329 72.73 788 771 158.9
A 3 137 7933 45.07 788 771 158.9
A 0 226 6656 37.03 788 771 158.9
B 6 159 1812154 12121.26 782 761 149.4
B 4 80 156572 1042.64 782 761 149.4
B 0 190 31049 202.68 782 761 149.4
C 3 233 131582 744.74 754 758 175.7
C 14 238 123510 698.79 754 758 175.7
C 0 10 36117 201.29 754 758 175.7
D 8 195 979384 5419.79 763 742 180.6
D 13 249 156718 863.81 763 742 180.6
D 12 233 86664 475.84 763 742 180.6

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