ASTROSAT CZTI

Data Quality Report

Orbit 41325

Creation date: 2024-06-27T22:27:36.909913
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_037T01_9000005652_41325cztM0_level2.fits modeM0/AS1A12_037T01_9000005652_41325cztM0_level2_quad_clean.evt
Size (bytes)342,702,72085,556,160
Size326.8 MB 81.6 MB
Events in quadrant A2,898,766582,563
Events in quadrant B2,823,878589,836
Events in quadrant C3,122,789539,792
Events in quadrant D3,422,665502,821

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118993
B0121052
C0125992
D0140502

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5361130.242492%
B5361921.716098%
C53612464.588696%
D53612765.148293%

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 7033 5362 4 4 0.06% 0.07%
B 7033 5362 62 62 0.88% 1.16%
C 7033 5362 241 241 3.43% 4.49%
D 7033 5362 272 272 3.87% 5.07%

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 511525 4237.36 579 566 120.6
A 2 79 73612 605.77 579 566 120.6
A 12 189 53646 440.19 579 566 120.6
B 5 255 405266 3610.51 575 559 112.1
B 0 190 81755 724.37 575 559 112.1
B 0 155 30938 271.02 575 559 112.1
C 0 10 718890 5558.27 548 551 129.2
C 15 214 224401 1732.08 548 551 129.2
C 8 222 38285 291.97 548 551 129.2
D 1 52 668768 4933.15 547 531 135.5
D 13 249 274217 2020.44 547 531 135.5
D 1 47 245439 1807.99 547 531 135.5

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