ASTROSAT CZTI

Data Quality Report

Orbit 33910

Creation date: 2024-06-27T20:54:02.175968
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/AS1T04_090T01_9000004840_33910cztM0_level2.evt modeM0/AS1T04_090T01_9000004840_33910cztM0_level2_quad_clean.evt
Size (bytes)195,226,56029,283,840
Size186.2 MB 27.9 MB
Events in quadrant A1,158,618184,653
Events in quadrant B1,379,343187,375
Events in quadrant C1,308,504184,889
Events in quadrant D1,920,431176,007

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0474868
B0541935
C0511366
D0732874

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0462
B0460
C0460
D0460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2109622.939782%
B2120843.962264%
C2113442.082347%
D2109833.935514%

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 3446 2132 51 51 1.48% 2.39%
B 3446 2134 37 37 1.07% 1.73%
C 3446 2134 27 27 0.78% 1.27%
D 3446 2134 58 58 1.68% 2.72%

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 15 169 135096 2467.95 261 254 54.6
A 13 6 6760 119.08 261 254 54.6
A 10 83 5975 104.71 261 254 54.6
B 5 172 251773 4913.25 258 252 51.2
B 4 170 20036 386.46 258 252 51.2
B 15 35 18811 362.53 258 252 51.2
C 3 9 98187 1605.12 255 256 61.0
C 15 214 94303 1541.46 255 256 61.0
C 0 10 80115 1308.92 255 256 61.0
D 1 52 481533 6893.67 253 248 69.8
D 8 195 277902 3976.97 253 248 69.8
D 10 118 47901 682.56 253 248 69.8

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