ASTROSAT CZTI

Data Quality Report

Orbit 49664

Creation date: 2024-12-09T13:57:41.802319
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/AS1T05_233T01_9000006438_49664cztM0_level2.fits modeM0/AS1T05_233T01_9000006438_49664cztM0_level2_quad_clean.evt
Size (bytes)1,199,511,36036,040,320
Size1.1 GB 34.4 MB
Events in quadrant A14,955,81658,679
Events in quadrant B4,970,779588,857
Events in quadrant C8,741,092361
Events in quadrant D15,258,89614,295

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0486085
B0190711
C0302511
D0495551

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6143574793.553638%
B614479712.972005%
C6144614299.967448%
D6144603698.242188%

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 7233 6144 5669 5669 78.38% 92.27%
B 7234 6145 602 602 8.32% 9.80%
C 7233 6143 957 957 13.23% 15.58%
D 7234 6144 5441 5441 75.21% 88.56%

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 5748163 48993.03 420 407 117.3
A 12 50 1823964 15543.73 420 407 117.3
A 3 130 971691 8279.08 420 407 117.3
B 5 49 906543 6765.47 633 615 133.9
B 7 0 600546 4480.28 633 615 133.9
B 4 206 585337 4366.7 633 615 133.9
C 15 180 3690374 132601.08 52 49 27.8
C 15 181 1160433 41695.02 52 49 27.8
C 15 219 523114 18794.82 52 49 27.8
D 15 40 3065157 36058.07 220 208 85.0
D 15 184 2125347 25001.53 220 208 85.0
D 7 60 1527007 17962.26 220 208 85.0

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