ASTROSAT CZTI

Data Quality Report

Orbit 42015

Creation date: 2024-06-27T22:35:45.894278
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_011T26_9000005732_42015cztM0_level2.fits modeM0/AS1A12_011T26_9000005732_42015cztM0_level2_quad_clean.evt
Size (bytes)343,126,08093,101,760
Size327.2 MB 88.8 MB
Events in quadrant A3,592,678612,866
Events in quadrant B2,823,276635,589
Events in quadrant C2,617,685610,248
Events in quadrant D3,218,933557,287

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140662
B0124032
C0115542
D0135772

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A57621272.204096%
B5762430.746269%
C576240.069420%
D5762981.700798%

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 7165 5763 63 63 0.88% 1.09%
B 7165 5763 22 22 0.31% 0.38%
C 7165 5763 0 0 0.00% 0.00%
D 7165 5763 105 105 1.47% 1.82%

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 609894 4812.66 616 603 126.6
A 15 223 474322 3741.8 616 603 126.6
A 12 189 83503 654.81 616 603 126.6
B 15 54 109503 912.3 614 596 119.4
B 3 112 95771 797.27 614 596 119.4
B 0 190 73277 608.84 614 596 119.4
C 15 214 242154 1715.15 604 606 140.8
C 12 249 9903 66.01 604 606 140.8
C 8 79 4881 30.36 604 606 140.8
D 13 249 298556 2008.37 604 587 148.4
D 12 233 103655 694.7 604 587 148.4
D 11 6 102215 684.99 604 587 148.4

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