ASTROSAT CZTI

Data Quality Report

Orbit 47654

Creation date: 2024-07-21T02:35:58.983167
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/AS1A13_071T01_9000006340_47654cztM0_level2.fits modeM0/AS1A13_071T01_9000006340_47654cztM0_level2_quad_clean.evt
Size (bytes)546,367,680122,909,760
Size521.1 MB 117.2 MB
Events in quadrant A8,084,073816,268
Events in quadrant B4,099,236826,960
Events in quadrant C3,299,800799,573
Events in quadrant D4,141,091739,517

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0298420
B0177250
C0159070
D0180090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77471842.375113%
B77481301.677852%
C774860.077439%
D7748590.761487%

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 7747 7747 19 19 0.25% 0.25%
B 7748 7748 49 49 0.63% 0.63%
C 7748 7748 3 3 0.04% 0.04%
D 7748 7748 55 55 0.71% 0.71%

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 10 83 4230106 23438.76 859 837 180.4
A 9 191 505254 2795.5 859 837 180.4
A 13 248 22081 117.74 859 837 180.4
B 0 200 374506 2193.93 852 825 170.3
B 5 172 255380 1494.53 852 825 170.3
B 5 255 30715 175.49 852 825 170.3
C 14 254 38726 193.4 835 837 195.9
C 3 233 6401 28.4 835 837 195.9
C 13 61 5499 23.8 835 837 195.9
D 14 49 305394 1449.66 837 808 210.1
D 12 2 178806 847.17 837 808 210.1
D 12 218 175035 829.22 837 808 210.1

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