ASTROSAT CZTI

Data Quality Report

Orbit 12031

Creation date: 2024-06-27T16:21:26.944973
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/AS1A04_044T01_9000001782_12031cztM0_level2.evt modeM0/AS1A04_044T01_9000001782_12031cztM0_level2_quad_clean.evt
Size (bytes)478,728,00095,569,920
Size456.6 MB 91.1 MB
Events in quadrant A3,891,451606,019
Events in quadrant B3,497,710612,850
Events in quadrant C3,229,025597,156
Events in quadrant D3,393,740579,705

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162053
B0151012
C0146642
D0152972

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7164841.172529%
B7164721.005025%
C7164200.279174%
D7164640.893356%

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 7710 7166 25 25 0.32% 0.35%
B 7710 7166 6 6 0.08% 0.08%
C 7710 7166 0 0 0.00% 0.00%
D 7710 7166 41 41 0.53% 0.57%

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 309612 1783.45 850 833 173.1
A 1 162 95298 545.61 850 833 173.1
A 1 178 50131 284.74 850 833 173.1
B 15 204 56612 338.17 851 830 165.0
B 0 85 54273 323.99 851 830 165.0
B 4 239 51164 305.14 851 830 165.0
C 14 234 6103 27.32 826 829 193.0
C 13 61 5869 26.11 826 829 193.0
C 8 222 2682 9.6 826 829 193.0
D 1 52 220352 1128.85 819 799 194.5
D 10 50 25613 127.58 819 799 194.5
D 8 195 24107 119.84 819 799 194.5

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