ASTROSAT CZTI

Data Quality Report

Orbit 20201110_A09_038T37_9000003980_level2

Creation date: 2021-01-07T14:36:55.612976
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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_038T37_9000003980cztM0_level2_bc.evt modeM0/AS1A09_038T37_9000003980cztM0_level2_quad_clean.evt
Size (bytes)213,255,36091,258,560
Size203.4 MB 87.0 MB
Events in quadrant A970,333618,479
Events in quadrant B1,047,295628,469
Events in quadrant C1,185,217595,572
Events in quadrant D2,908,694571,796

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100300
B0101560
C0107700
D0160300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A498140.080305%
B498180.160610%
C4981721.445493%
D49813236.484642%

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 4981 4981 0 0 0.00% 0.00%
B 4981 4981 1 1 0.02% 0.02%
C 4981 4981 5 5 0.10% 0.10%
D 4981 4981 143 143 2.87% 2.87%

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 13 248 8986 152.64 247 242 57.3
A 13 254 8212 139.13 247 242 57.3
A 0 226 1558 22.97 247 242 57.3
B 0 230 30054 582.27 250 244 51.2
B 5 172 30018 581.56 250 244 51.2
B 0 190 7273 137.29 250 244 51.2
C 8 208 240092 4092.25 236 234 58.6
C 3 233 27335 462.37 236 234 58.6
C 4 224 5522 90.22 236 234 58.6
D 12 2 1431649 24384.24 239 229 58.7
D 1 52 350529 5967.36 239 229 58.7
D 7 80 77383 1314.32 239 229 58.7

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