ASTROSAT CZTI

Data Quality Report

Orbit 04893

Creation date: 2024-06-27T14:48:31.698138
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/AS1G05_237T01_9000000620_04893cztM0_level2.evt modeM0/AS1G05_237T01_9000000620_04893cztM0_level2_quad_clean.evt
Size (bytes)504,362,88064,068,480
Size481.0 MB 61.1 MB
Events in quadrant A3,491,282374,010
Events in quadrant B3,744,738374,876
Events in quadrant C3,272,004371,133
Events in quadrant D4,313,542354,392

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144533
B0152602
C0139222
D0171242

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66731752.622509%
B66731602.397722%
C66731061.588491%
D66732684.016185%

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 7838 6673 17 17 0.22% 0.25%
B 7838 6673 10 10 0.13% 0.15%
C 7838 6673 0 0 0.00% 0.00%
D 7838 6673 114 114 1.45% 1.71%

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 50 125246 710.88 862 845 175.0
A 8 15 29609 164.37 862 845 175.0
A 13 251 12618 67.27 862 845 175.0
B 15 204 144950 870.81 865 847 165.5
B 0 219 58584 348.9 865 847 165.5
B 4 48 46647 276.77 865 847 165.5
C 12 4 7393 34.04 835 841 192.5
C 13 61 6989 31.94 835 841 192.5
C 14 67 5104 22.15 835 841 192.5
D 2 136 338061 1639.25 834 809 205.7
D 13 235 283956 1376.26 834 809 205.7
D 2 33 150957 729.81 834 809 205.7

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