ASTROSAT CZTI

Data Quality Report

Orbit 20585

Creation date: 2024-06-27T18:17:07.502060
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/AS1A06_003T04_9000003046_20585cztM0_level2.evt modeM0/AS1A06_003T04_9000003046_20585cztM0_level2_quad_clean.evt
Size (bytes)505,497,60094,639,680
Size482.1 MB 90.3 MB
Events in quadrant A3,251,443609,953
Events in quadrant B3,484,982616,998
Events in quadrant C3,348,804599,223
Events in quadrant D4,778,113582,037

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138172
B0145682
C0139852
D0187942

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6561861.310776%
B65621281.950625%
C65621382.103017%
D65623395.166108%

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 8886 6563 0 0 0.00% 0.00%
B 8887 6564 9 9 0.10% 0.14%
C 8887 6564 0 0 0.00% 0.00%
D 8887 6564 162 162 1.82% 2.47%

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 0 226 7427 39.06 844 824 169.1
A 3 137 6606 34.2 844 824 169.1
A 12 194 6155 31.53 844 824 169.1
B 7 220 40264 246.96 842 823 159.7
B 0 219 34938 213.61 842 823 159.7
B 4 216 34133 208.57 842 823 159.7
C 14 238 127175 664.2 817 824 190.2
C 8 208 33128 169.82 817 824 190.2
C 13 61 5846 26.4 817 824 190.2
D 1 20 1006104 5050.73 819 796 199.0
D 5 222 301492 1510.71 819 796 199.0
D 1 52 85024 423.17 819 796 199.0

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