ASTROSAT CZTI

Data Quality Report

Orbit 38199

Creation date: 2024-06-27T21:49:38.652999
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/AS1A07_145T01_9000005370_38199cztM0_level2.fits modeM0/AS1A07_145T01_9000005370_38199cztM0_level2_quad_clean.evt
Size (bytes)354,600,00091,247,040
Size338.2 MB 87.0 MB
Events in quadrant A2,835,378622,976
Events in quadrant B2,498,012643,868
Events in quadrant C2,784,557612,544
Events in quadrant D4,611,238525,851

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114763
B0106482
C0112192
D0171722

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5098240.470773%
B5098140.274617%
C5098721.412319%
D50984959.709690%

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 6981 5099 17 17 0.24% 0.33%
B 6981 5099 6 6 0.09% 0.12%
C 6981 5099 68 68 0.97% 1.33%
D 6981 5099 519 519 7.43% 10.18%

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 365202 3053.68 590 580 119.4
A 0 247 65145 540.73 590 580 119.4
A 12 189 57887 479.94 590 580 119.4
B 12 18 47339 410.82 595 581 113.8
B 0 229 37379 323.31 595 581 113.8
B 5 172 16724 141.83 595 581 113.8
C 14 254 267882 1979.9 582 588 135.0
C 15 214 208771 1542.06 582 588 135.0
C 0 10 14776 105.09 582 588 135.0
D 2 250 1833547 13303.19 566 552 137.8
D 13 249 134075 969.06 566 552 137.8
D 10 199 108666 784.65 566 552 137.8

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