ASTROSAT CZTI

Data Quality Report

Orbit 41936

Creation date: 2024-06-27T22:34:41.971023
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_099T03_9000005720_41936cztM0_level2.fits modeM0/AS1A12_099T03_9000005720_41936cztM0_level2_quad_clean.evt
Size (bytes)576,403,20078,592,320
Size549.7 MB 75.0 MB
Events in quadrant A4,078,566588,410
Events in quadrant B2,880,138625,481
Events in quadrant C3,311,579561,376
Events in quadrant D10,663,914241,434

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154233
B0119032
C0128242
D0352292

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A51802815.424710%
B51801152.220077%
C51802765.328185%
D5180317261.235521%

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 7063 5181 198 198 2.80% 3.82%
B 7063 5181 70 70 0.99% 1.35%
C 7063 5181 265 265 3.75% 5.11%
D 7063 5181 3260 3260 46.16% 62.92%

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 14 24 1297440 11209.25 576 564 115.7
A 10 83 504508 4355.72 576 564 115.7
A 15 223 33629 285.79 576 564 115.7
B 0 229 546856 4865.91 582 566 112.3
B 5 255 28729 250.85 582 566 112.3
B 0 190 15400 132.13 582 566 112.3
C 0 10 806266 6262.25 556 560 128.7
C 15 214 206061 1597.23 556 560 128.7
C 4 254 122525 947.96 556 560 128.7
D 12 79 8034023 77573.94 424 412 103.6
D 13 249 661304 6381.69 424 412 103.6
D 2 249 130492 1256.07 424 412 103.6

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