ASTROSAT CZTI

Data Quality Report

Orbit 41154

Creation date: 2024-06-27T22:25:08.026735
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/AS1A12_025T12_9000005604_41154cztM0_level2.fits modeM0/AS1A12_025T12_9000005604_41154cztM0_level2_quad_clean.evt
Size (bytes)305,844,48090,164,160
Size291.7 MB 86.0 MB
Events in quadrant A2,827,632615,922
Events in quadrant B2,489,656634,914
Events in quadrant C2,883,772581,526
Events in quadrant D2,725,913543,234

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113083
B0104762
C0114992
D0115442

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A505880.158165%
B5058150.296560%
C5058681.344405%
D5058811.601423%

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 6970 5059 2 2 0.03% 0.04%
B 6970 5059 2 2 0.03% 0.04%
C 6970 5059 59 59 0.85% 1.17%
D 6970 5059 73 73 1.05% 1.44%

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 10 83 483869 3937.89 601 590 122.7
A 2 79 22820 181.14 601 590 122.7
A 13 254 7891 59.49 601 590 122.7
B 0 245 99698 855.99 596 582 115.8
B 0 190 22496 189.25 596 582 115.8
B 5 255 19139 160.26 596 582 115.8
C 9 54 227523 1695.32 575 580 133.9
C 15 214 223199 1663.02 575 580 133.9
C 0 10 183308 1365.02 575 580 133.9
D 2 249 264495 1860.03 574 557 141.9
D 13 249 110861 777.34 574 557 141.9
D 2 16 87872 615.33 574 557 141.9

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