ASTROSAT CZTI

Data Quality Report

Orbit 32400

Creation date: 2024-06-27T20:39:47.345035
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/AS1T04_059T01_9000004704_32400cztM0_level2.evt modeM0/AS1T04_059T01_9000004704_32400cztM0_level2_quad_clean.evt
Size (bytes)830,695,68077,584,320
Size792.2 MB 74.0 MB
Events in quadrant A3,503,107492,886
Events in quadrant B12,684,511399,732
Events in quadrant C3,767,350483,175
Events in quadrant D4,705,281459,850

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152993
B0428452
C0156792
D0188022

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73611862.526831%
B7361319043.336503%
C73612623.559299%
D73613674.985736%

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 7431 7363 1 1 0.01% 0.01%
B 7431 7363 1834 1834 24.68% 24.91%
C 7431 7363 0 0 0.00% 0.00%
D 7431 7363 187 187 2.52% 2.54%

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 13 254 16435 85.12 899 880 182.7
A 15 174 12474 63.45 899 880 182.7
A 0 6 10564 52.99 899 880 182.7
B 4 80 6983900 46189.3 782 760 151.2
B 6 159 1859621 12295.26 782 760 151.2
B 10 245 548675 3624.13 782 760 151.2
C 14 238 142248 684.27 861 865 206.6
C 3 233 123470 593.39 861 865 206.6
C 14 67 52992 252.29 861 865 206.6
D 12 233 770238 3731.0 860 835 206.2
D 8 195 282458 1365.65 860 835 206.2
D 1 47 110437 531.48 860 835 206.2

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