ASTROSAT CZTI

Data Quality Report

Orbit 13531

Creation date: 2024-06-27T16:42:10.326799
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_048T01_9000001992_13531cztM0_level2.evt modeM0/AS1A04_048T01_9000001992_13531cztM0_level2_quad_clean.evt
Size (bytes)456,851,52077,198,400
Size435.7 MB 73.6 MB
Events in quadrant A3,043,390479,676
Events in quadrant B3,248,788490,831
Events in quadrant C3,248,249481,225
Events in quadrant D3,879,089457,778

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128172
B0133981
C0133981
D0154911

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6132691.125245%
B61321011.647097%
C6132681.108937%
D61322023.294194%

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 7298 6133 0 0 0.00% 0.00%
B 7298 6133 27 27 0.37% 0.44%
C 7298 6133 0 0 0.00% 0.00%
D 7298 6133 69 69 0.95% 1.13%

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 2 250 15213 91.37 784 769 158.1
A 1 162 13473 80.36 784 769 158.1
A 0 226 6967 39.21 784 769 158.1
B 3 64 54043 364.12 780 762 146.3
B 0 189 46468 312.35 780 762 146.3
B 4 173 42892 287.91 780 762 146.3
C 3 233 222288 1255.16 773 779 176.5
C 7 238 11771 62.29 773 779 176.5
C 13 61 5477 26.62 773 779 176.5
D 13 122 642423 3562.56 760 740 180.1
D 8 195 192052 1062.15 760 740 180.1
D 2 136 55970 306.63 760 740 180.1

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