ASTROSAT CZTI

Data Quality Report

Orbit 15814

Creation date: 2024-06-27T17:13:54.063377
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/AS1A04_026T01_9000002342_15814cztM0_level2.evt modeM0/AS1A04_026T01_9000002342_15814cztM0_level2_quad_clean.evt
Size (bytes)833,567,040156,427,200
Size795.0 MB 149.2 MB
Events in quadrant A6,651,116963,219
Events in quadrant B6,594,266991,606
Events in quadrant C5,853,618986,204
Events in quadrant D5,338,811972,340

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02400
B02400
C02400
D02400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0277753
B0272672
C0250342
D0244042

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A119214063.405755%
B119213102.600453%
C119212241.879037%
D119211221.023404%

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 12982 11923 192 192 1.48% 1.61%
B 12982 11924 121 121 0.93% 1.01%
C 12982 11924 15 15 0.12% 0.13%
D 12982 11924 12 12 0.09% 0.10%

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 15 239 1285476 4620.71 1371 1341 277.9
A 13 210 44890 156.7 1371 1341 277.9
A 13 248 29623 101.77 1371 1341 277.9
B 5 65 604205 2296.04 1376 1337 262.6
B 7 220 186342 704.6 1376 1337 262.6
B 4 48 88472 331.86 1376 1337 262.6
C 3 233 217007 700.56 1327 1334 307.9
C 14 238 204331 659.38 1327 1334 307.9
C 9 54 186956 602.95 1327 1334 307.9
D 2 152 80781 226.63 1344 1308 350.7
D 2 234 51353 142.71 1344 1308 350.7
D 1 52 28732 78.2 1344 1308 350.7

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