ASTROSAT CZTI

Data Quality Report

Orbit 13550

Creation date: 2024-06-27T16:42:29.210663
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_085T01_9000001996_13550cztM0_level2.evt modeM0/AS1A04_085T01_9000001996_13550cztM0_level2_quad_clean.evt
Size (bytes)148,976,64029,854,080
Size142.1 MB 28.5 MB
Events in quadrant A1,035,655194,608
Events in quadrant B1,059,422196,524
Events in quadrant C1,054,276188,627
Events in quadrant D1,224,534179,081

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0440
B0440
C0440
D0440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A042472
B043261
C042891
D049091

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1984783.931452%
B1984733.679435%
C1984592.973790%
D1984703.528226%

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 2850 1985 0 0 0.00% 0.00%
B 2850 1985 1 1 0.04% 0.05%
C 2850 1985 0 0 0.00% 0.00%
D 2850 1985 11 11 0.39% 0.55%

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 1 162 6452 110.43 266 259 56.1
A 1 178 2466 39.35 266 259 56.1
A 0 226 2424 38.6 266 259 56.1
B 0 214 9873 187.34 262 255 51.3
B 3 209 8016 151.17 262 255 51.3
B 3 64 7750 145.99 262 255 51.3
C 3 233 59260 978.07 255 254 60.3
C 13 61 1854 26.52 255 254 60.3
C 8 222 817 9.33 255 254 60.3
D 13 122 126629 2011.94 256 248 62.8
D 2 14 67107 1064.37 256 248 62.8
D 8 195 29468 465.17 256 248 62.8

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