ASTROSAT CZTI

Data Quality Report

Orbit 44972

Creation date: 2024-06-27T23:08:37.071765
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_044T01_9000006034_44972cztM0_level2.fits modeM0/AS1A13_044T01_9000006034_44972cztM0_level2_quad_clean.evt
Size (bytes)613,177,920127,342,080
Size584.8 MB 121.4 MB
Events in quadrant A6,771,994832,644
Events in quadrant B4,866,466868,627
Events in quadrant C3,736,750842,545
Events in quadrant D6,702,352755,255

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0262680
B0200160
C0168800
D0254240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80063744.671496%
B80062242.797902%
C8006250.312266%
D80074245.295367%

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 8006 8006 167 167 2.09% 2.09%
B 8006 8006 133 133 1.66% 1.66%
C 8006 8006 16 16 0.20% 0.20%
D 8007 8007 363 363 4.53% 4.53%

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 2655906 14531.03 876 857 182.7
A 13 248 680087 3717.41 876 857 182.7
A 7 3 21269 111.71 876 857 182.7
B 0 189 542774 3099.34 889 860 174.8
B 0 219 194575 1107.91 889 860 174.8
B 4 222 142265 808.73 889 860 174.8
C 3 233 122380 586.25 882 885 207.2
C 12 250 103266 494.02 882 885 207.2
C 12 2 35652 167.76 882 885 207.2
D 13 249 810673 3711.73 867 839 218.2
D 13 187 719953 3295.93 867 839 218.2
D 2 249 262263 1198.19 867 839 218.2

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