ASTROSAT CZTI

Data Quality Report

Orbit 26275

Creation date: 2024-06-27T19:26:54.461757
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/AS1A09_079T03_9000003790_26275cztM0_level2.evt modeM0/AS1A09_079T03_9000003790_26275cztM0_level2_quad_clean.evt
Size (bytes)425,160,00089,300,160
Size405.5 MB 85.2 MB
Events in quadrant A3,089,848559,118
Events in quadrant B3,121,936577,604
Events in quadrant C3,279,247563,208
Events in quadrant D2,942,891551,175

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134140
B0133970
C0139480
D0133220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6496741.139163%
B6497821.262121%
C64971201.847006%
D6497440.677236%

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 7086 6497 3 3 0.04% 0.05%
B 7087 6498 0 0 0.00% 0.00%
C 7087 6498 3 3 0.04% 0.05%
D 7087 6498 0 0 0.00% 0.00%

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 0 13 67089 418.86 783 764 158.3
A 13 254 11165 65.68 783 764 158.3
A 3 137 7338 41.52 783 764 158.3
B 3 112 42846 281.18 782 764 149.7
B 12 111 18290 117.1 782 764 149.7
B 11 111 15957 101.52 782 764 149.7
C 3 233 147447 828.98 752 758 177.0
C 14 238 120669 677.65 752 758 177.0
C 2 16 78717 440.57 752 758 177.0
D 1 52 34047 182.69 761 742 182.3
D 2 234 27439 146.45 761 742 182.3
D 12 233 11592 59.52 761 742 182.3

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