ASTROSAT CZTI

Data Quality Report

Orbit 42057

Creation date: 2024-06-27T22:36:18.218988
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_037T03_9000005738_42057cztM0_level2.fits modeM0/AS1A12_037T03_9000005738_42057cztM0_level2_quad_clean.evt
Size (bytes)333,311,04084,579,840
Size317.9 MB 80.7 MB
Events in quadrant A3,582,209566,791
Events in quadrant B2,404,942590,519
Events in quadrant C2,406,404558,907
Events in quadrant D3,541,834482,540

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0350
C0350
D0350

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140102
B0106403
C0103702
D0140972

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5168821.586687%
B5167210.406425%
C516740.077414%
D51673566.889878%

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 7050 5169 43 43 0.61% 0.83%
B 7049 5168 14 14 0.20% 0.27%
C 7049 5168 1 1 0.01% 0.02%
D 7049 5168 316 316 4.48% 6.11%

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 15 223 704142 5932.56 575 563 118.6
A 10 83 563191 4744.07 575 563 118.6
A 12 189 73631 616.11 575 563 118.6
B 5 255 51837 455.86 573 557 112.5
B 0 190 44718 392.58 573 557 112.5
B 3 112 20963 181.4 573 557 112.5
C 15 214 217450 1650.77 559 562 131.4
C 12 249 5756 39.53 559 562 131.4
C 13 61 3779 24.49 559 562 131.4
D 1 52 688835 5076.24 547 531 135.6
D 12 6 269915 1986.71 547 531 135.6
D 12 233 238584 1755.64 547 531 135.6

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