ASTROSAT CZTI

Data Quality Report

Orbit 48537

Creation date: 2024-09-19T21:02:40.551960
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_037T01_9000006436_48537cztM0_level2.fits modeM0/AS1A13_037T01_9000006436_48537cztM0_level2_quad_clean.evt
Size (bytes)576,673,920118,575,360
Size550.0 MB 113.1 MB
Events in quadrant A8,016,825752,439
Events in quadrant B3,877,257807,207
Events in quadrant C3,464,869792,325
Events in quadrant D5,368,484684,363

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A029629183
B01760290
C01675898
D022030124

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79686878.621988%
B79734846.070488%
C79743013.774768%
D79776838.562116%

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 8047 7974 40 40 0.50% 0.50%
B 8060 7980 21 21 0.26% 0.26%
C 8057 7981 2 2 0.02% 0.03%
D 8065 7982 296 296 3.67% 3.71%

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 4283627 23189.16 872 852 184.7
A 12 189 334441 1806.22 872 852 184.7
A 7 3 15556 79.62 872 852 184.7
B 5 255 332390 1868.18 881 852 177.5
B 0 183 29183 159.64 881 852 177.5
B 12 111 23226 126.08 881 852 177.5
C 14 254 19847 91.27 880 879 207.8
C 12 250 14708 66.55 880 879 207.8
C 13 61 5775 23.56 880 879 207.8
D 2 165 1936502 8832.69 863 832 219.1
D 2 249 102849 465.52 863 832 219.1
D 2 234 33471 148.94 863 832 219.1

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