ASTROSAT CZTI

Data Quality Report

Orbit 42068

Creation date: 2024-06-27T22:36:27.168217
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_42068cztM0_level2.fits modeM0/AS1A12_037T03_9000005738_42068cztM0_level2_quad_clean.evt
Size (bytes)353,655,36085,659,840
Size337.3 MB 81.7 MB
Events in quadrant A5,005,483566,838
Events in quadrant B2,374,488608,301
Events in quadrant C2,369,976569,175
Events in quadrant D2,960,876506,564

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0360
C0360
D0360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0183192
B0101782
C098432
D0121172

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A48882555.216858%
B4888200.409165%
C488820.040917%
D48881553.171031%

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 6921 4889 249 249 3.60% 5.09%
B 6921 4889 13 13 0.19% 0.27%
C 6921 4889 0 0 0.00% 0.00%
D 6921 4889 130 130 1.88% 2.66%

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 2125759 18728.68 560 552 113.5
A 10 83 495418 4361.07 560 552 113.5
A 15 222 177436 1558.81 560 552 113.5
B 3 112 77745 704.77 569 552 109.5
B 5 255 43690 393.85 569 552 109.5
B 15 85 15107 132.89 569 552 109.5
C 15 214 203491 1556.57 553 557 130.4
C 8 79 4994 34.03 553 557 130.4
C 13 61 3742 24.43 553 557 130.4
D 12 6 594210 4395.98 541 525 135.1
D 1 52 136660 1008.02 541 525 135.1
D 13 249 49465 362.38 541 525 135.1

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