ASTROSAT CZTI

Data Quality Report

Orbit 32196

Creation date: 2024-06-27T20:37:28.500274
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/AS1A09_131T01_9000004690_32196cztM0_level2.evt modeM0/AS1A09_131T01_9000004690_32196cztM0_level2_quad_clean.evt
Size (bytes)1,011,502,080185,999,040
Size964.6 MB 177.4 MB
Events in quadrant A5,475,2951,229,821
Events in quadrant B8,995,2981,239,007
Events in quadrant C6,720,3041,200,323
Events in quadrant D8,654,5771,156,507

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02360
B02360
C02360
D02360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0239493
B0358192
C0274672
D0340132

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11677440.376809%
B116772181.866918%
C116775324.555965%
D116774393.759527%

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 13267 11679 1 1 0.01% 0.01%
B 13267 11679 42 42 0.32% 0.36%
C 13267 11679 64 64 0.48% 0.55%
D 13267 11679 264 264 1.99% 2.26%

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 6 26120 88.78 1402 1377 278.7
A 13 254 22885 77.17 1402 1377 278.7
A 12 96 19012 63.27 1402 1377 278.7
B 6 159 3175899 12181.92 1385 1352 260.6
B 5 172 154256 586.75 1385 1352 260.6
B 0 245 84946 320.78 1385 1352 260.6
C 3 233 859315 2805.07 1322 1327 305.9
C 0 10 316207 1029.46 1322 1327 305.9
C 14 238 254273 826.97 1322 1327 305.9
D 8 195 2103143 6681.27 1329 1292 314.6
D 12 233 419837 1330.45 1329 1292 314.6
D 13 249 343393 1087.45 1329 1292 314.6

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