ASTROSAT CZTI

Data Quality Report

Orbit 04755

Creation date: 2024-06-27T14:46:23.779193
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/AS1G05_195T01_9000000598_04755cztM0_level2.evt modeM0/AS1G05_195T01_9000000598_04755cztM0_level2_quad_clean.evt
Size (bytes)568,241,280109,284,480
Size541.9 MB 104.2 MB
Events in quadrant A3,811,629682,242
Events in quadrant B4,366,771674,296
Events in quadrant C4,213,129688,519
Events in quadrant D4,224,604658,340

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01760
B01760
C01762
D01760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01781292
B019011115
C01910398
D019319166

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8746881.006174%
B87351671.911849%
C87422402.745367%
D87221311.501949%

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 9271 8778 0 0 0.00% 0.00%
B 9271 8776 54 54 0.58% 0.62%
C 9271 8785 149 149 1.61% 1.70%
D 9269 8764 34 34 0.37% 0.39%

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 13 251 31062 149.08 978 954 202.0
A 15 174 10542 47.48 978 954 202.0
A 12 194 10009 44.84 978 954 202.0
B 10 16 321126 1691.45 979 953 189.3
B 14 167 136875 718.06 979 953 189.3
B 4 80 48665 252.06 979 953 189.3
C 14 48 469146 2135.05 943 945 219.3
C 12 4 24370 106.82 943 945 219.3
C 7 247 17080 73.58 943 945 219.3
D 11 132 214160 925.61 943 912 230.4
D 10 15 148806 641.94 943 912 230.4
D 13 235 92483 397.47 943 912 230.4

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