ASTROSAT CZTI

Data Quality Report

Orbit 48177

Creation date: 2024-08-25T16:57:39.521627
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/AS1C09_004T05_9000006408_48177cztM0_level2.fits modeM0/AS1C09_004T05_9000006408_48177cztM0_level2_quad_clean.evt
Size (bytes)554,224,320103,530,240
Size528.5 MB 98.7 MB
Events in quadrant A8,855,358890,207
Events in quadrant B1,458,856103
Events in quadrant C4,150,604865,659
Events in quadrant D5,386,433791,775

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0318350
B089910
C0187130
D0220020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A84401762.085308%
B8440843899.976303%
C84401561.848341%
D84403273.874408%

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 8440 8440 18 18 0.21% 0.21%
B 8439 8439 1 1 0.01% 0.01%
C 8440 8440 140 140 1.66% 1.66%
D 8440 8440 251 251 2.97% 2.97%

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 5018573 26211.41 918 897 191.4
A 7 3 102931 533.01 918 897 191.4
A 13 248 79710 411.7 918 897 191.4
B 2 177 1163435 81111.73 62 60 14.3
B 4 21 22545 1567.68 62 60 14.3
B 0 200 12156 843.35 62 60 14.3
C 6 255 535625 2508.92 906 909 213.1
C 12 2 39162 179.48 906 909 213.1
C 12 249 18413 82.13 906 909 213.1
D 2 165 1517830 6650.79 902 873 228.1
D 2 249 86985 377.54 902 873 228.1
D 11 192 54048 233.13 902 873 228.1

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