ASTROSAT CZTI

Data Quality Report

Orbit 36544

Creation date: 2024-06-27T21:28:12.253911
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/AS1A11_089T02_9000005216_36544cztM0_level2.evt modeM0/AS1A11_089T02_9000005216_36544cztM0_level2_quad_clean.evt
Size (bytes)915,442,560115,081,920
Size873.0 MB 109.8 MB
Events in quadrant A5,549,704713,085
Events in quadrant B6,067,990706,107
Events in quadrant C6,922,299676,759
Events in quadrant D8,458,926645,192

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0231104
B0250813
C0272473
D0326413

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02200
B02200
C02200
D02200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10742240.223422%
B107422101.954943%
C107424203.909886%
D107426085.660026%

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 14891 10745 8 8 0.05% 0.07%
B 14891 10745 112 112 0.75% 1.04%
C 14891 10745 337 337 2.26% 3.14%
D 14891 10745 506 506 3.40% 4.71%

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 356957 1432.84 1239 1215 248.3
A 15 223 341167 1369.24 1239 1215 248.3
A 7 3 25933 99.56 1239 1215 248.3
B 5 255 312190 1321.51 1226 1194 235.3
B 5 172 307987 1303.65 1226 1194 235.3
B 4 171 156877 661.54 1226 1194 235.3
C 0 10 824461 2992.46 1175 1180 275.1
C 10 49 498585 1807.97 1175 1180 275.1
C 14 254 478659 1735.54 1175 1180 275.1
D 12 235 1683270 5870.27 1174 1140 286.6
D 2 250 601999 2096.87 1174 1140 286.6
D 13 249 594469 2070.59 1174 1140 286.6

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