ASTROSAT CZTI

Data Quality Report

Orbit 41808

Creation date: 2024-06-27T22:33:03.498859
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_087T01_9000005702_41808cztM0_level2.fits modeM0/AS1A12_087T01_9000005702_41808cztM0_level2_quad_clean.evt
Size (bytes)348,364,80092,246,400
Size332.2 MB 88.0 MB
Events in quadrant A3,100,064637,191
Events in quadrant B2,469,357647,276
Events in quadrant C3,595,058584,404
Events in quadrant D3,324,054558,910

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122562
B0106692
C0136672
D0131962

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0250
C0250
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5220210.402299%
B5220210.402299%
C52203496.685824%
D52202454.693487%

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 7343 5221 14 14 0.19% 0.27%
B 7342 5219 16 16 0.22% 0.31%
C 7342 5220 340 340 4.63% 6.51%
D 7342 5219 234 234 3.19% 4.48%

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 531083 4229.22 615 602 125.4
A 15 223 63283 499.72 615 602 125.4
A 2 79 47185 371.38 615 602 125.4
B 5 255 46924 399.83 602 584 115.9
B 0 186 36329 308.42 602 584 115.9
B 0 183 15237 126.43 602 584 115.9
C 0 10 843919 6438.03 564 568 131.0
C 14 254 314248 2394.59 564 568 131.0
C 15 214 205148 1561.74 564 568 131.0
D 2 249 668842 4665.59 589 574 143.2
D 13 249 221192 1540.27 589 574 143.2
D 12 79 137676 957.19 589 574 143.2

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