ASTROSAT CZTI

Data Quality Report

Orbit 11721

Creation date: 2024-06-27T16:17:22.583673
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/AS1G08_075T01_9000001726_11721cztM0_level2.evt modeM0/AS1G08_075T01_9000001726_11721cztM0_level2_quad_clean.evt
Size (bytes)358,369,92058,368,960
Size341.8 MB 55.7 MB
Events in quadrant A2,837,175358,711
Events in quadrant B2,872,638359,690
Events in quadrant C2,237,367358,135
Events in quadrant D2,568,367342,759

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115631
B0117371
C0100591
D0107001

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4956350.706215%
B49561032.078289%
C495650.100888%
D495650.100888%

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 4957 4957 9 9 0.18% 0.18%
B 4957 4957 54 54 1.09% 1.09%
C 4957 4957 0 0 0.00% 0.00%
D 4957 4957 2 2 0.04% 0.04%

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 8 15 203310 1687.27 589 579 120.2
A 1 162 106985 885.58 589 579 120.2
A 1 178 59517 490.52 589 579 120.2
B 4 239 344065 3066.56 588 575 112.0
B 10 245 91582 812.48 588 575 112.0
B 15 204 62679 554.44 588 575 112.0
C 13 61 4272 27.78 573 577 133.0
C 12 4 1575 7.5 573 577 133.0
C 3 202 1436 6.46 573 577 133.0
D 8 195 314826 2288.5 569 554 137.3
D 1 52 34508 247.25 569 554 137.3
D 2 234 19930 141.09 569 554 137.3

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