ASTROSAT CZTI

Data Quality Report

Orbit 41965

Creation date: 2024-06-27T22:35:03.346095
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_025T15_9000005726_41965cztM0_level2.fits modeM0/AS1A12_025T15_9000005726_41965cztM0_level2_quad_clean.evt
Size (bytes)319,887,36089,648,640
Size305.1 MB 85.5 MB
Events in quadrant A3,289,963607,804
Events in quadrant B2,507,292627,901
Events in quadrant C2,499,373588,041
Events in quadrant D3,137,974526,031

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0290
C0290
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131012
B0108914
C0104982
D0129212

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5218180.344960%
B5217100.191681%
C521720.038336%
D52171883.603604%

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 7070 5219 6 6 0.08% 0.11%
B 7069 5218 7 7 0.10% 0.13%
C 7069 5218 0 0 0.00% 0.00%
D 7069 5218 173 173 2.45% 3.32%

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 530253 4300.9 599 588 123.2
A 2 79 413565 3353.39 599 588 123.2
A 15 222 20307 160.12 599 588 123.2
B 5 255 70768 597.34 597 582 117.5
B 0 190 65590 553.27 597 582 117.5
B 15 85 25168 209.25 597 582 117.5
C 15 214 230139 1686.86 580 585 136.1
C 9 54 7048 47.49 580 585 136.1
C 13 61 3902 24.37 580 585 136.1
D 13 249 628879 4474.33 569 552 140.4
D 12 6 144035 1021.74 569 552 140.4
D 2 249 70944 501.26 569 552 140.4

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