ASTROSAT CZTI

Data Quality Report

Orbit 03457

Creation date: 2024-06-27T14:29:15.826981
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_167T01_9000000456_03457cztM0_level2.evt modeM0/AS1G05_167T01_9000000456_03457cztM0_level2_quad_clean.evt
Size (bytes)748,768,320122,621,760
Size714.1 MB 116.9 MB
Events in quadrant A5,213,976751,487
Events in quadrant B6,049,357745,603
Events in quadrant C5,435,420740,247
Events in quadrant D5,237,269719,705

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02240
B02240
C02240
D02240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0227123
B0249242
C0233712
D0230722

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A109231030.942964%
B109231271.162684%
C109231401.281699%
D109231141.043669%

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 13243 10923 1 1 0.01% 0.01%
B 13243 10923 10 10 0.08% 0.09%
C 13243 10925 43 43 0.32% 0.39%
D 13243 10923 31 31 0.23% 0.28%

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 8 15 51708 185.86 1331 1306 271.2
A 0 31 15807 53.47 1331 1306 271.2
A 12 194 13915 46.5 1331 1306 271.2
B 15 204 541362 2105.47 1344 1316 256.5
B 7 252 100684 387.4 1344 1316 256.5
B 0 228 49878 189.33 1344 1316 256.5
C 15 208 220383 736.34 1294 1305 297.5
C 1 192 54119 177.51 1294 1305 297.5
C 14 234 45268 147.76 1294 1305 297.5
D 4 160 102833 325.76 1290 1254 311.8
D 13 223 93713 296.51 1290 1254 311.8
D 3 247 49557 154.9 1290 1254 311.8

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