ASTROSAT CZTI

Data Quality Report

Orbit 40923

Creation date: 2024-06-27T22:22:16.429874
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/AS1A12_044T19_9000005580_40923cztM0_level2.fits modeM0/AS1A12_044T19_9000005580_40923cztM0_level2_quad_clean.evt
Size (bytes)133,983,36035,259,840
Size127.8 MB 33.6 MB
Events in quadrant A1,154,727245,234
Events in quadrant B928,014247,328
Events in quadrant C1,027,078227,065
Events in quadrant D1,694,552205,370

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A046581
B040681
C042811
D063251

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A196380.407539%
B196390.458482%
C1963331.681100%
D19631517.692308%

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 1963 1963 2 2 0.10% 0.10%
B 1963 1963 6 6 0.31% 0.31%
C 1963 1963 25 25 1.27% 1.27%
D 1963 1963 125 125 6.37% 6.37%

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 224902 4578.16 234 229 49.1
A 13 248 12801 256.18 234 229 49.1
A 12 189 4566 88.38 234 229 49.1
B 0 229 25145 550.06 226 220 45.3
B 5 255 13534 293.82 226 220 45.3
B 12 111 5228 110.52 226 220 45.3
C 0 10 91207 1744.08 218 219 52.2
C 15 214 83956 1605.09 218 219 52.2
C 13 61 1432 23.25 218 219 52.2
D 2 249 498955 8998.02 219 212 55.4
D 13 249 164230 2959.11 219 212 55.4
D 12 233 61193 1100.18 219 212 55.4

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