ASTROSAT CZTI

Data Quality Report

Orbit 37769

Creation date: 2024-06-27T21:44:12.470455
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/AS1A11_106T02_9000005344_37769cztM0_level2.evt modeM0/AS1A11_106T02_9000005344_37769cztM0_level2_quad_clean.evt
Size (bytes)485,804,16055,722,240
Size463.3 MB 53.1 MB
Events in quadrant A2,816,138335,617
Events in quadrant B3,167,257328,406
Events in quadrant C2,691,765344,838
Events in quadrant D5,688,886317,685

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114983
B0127102
C0109772
D0204682

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5144220.427683%
B51442514.879471%
C5144440.855365%
D514460511.761275%

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 7178 5145 21 21 0.29% 0.41%
B 7178 5145 225 225 3.13% 4.37%
C 7178 5145 35 35 0.49% 0.68%
D 7178 5145 600 600 8.36% 11.66%

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 10 83 349242 2877.71 601 588 121.2
A 9 143 87752 719.43 601 588 121.2
A 6 10 35055 284.48 601 588 121.2
B 5 255 444665 4079.17 580 566 108.9
B 4 81 221361 2028.06 580 566 108.9
B 0 230 62655 570.3 580 566 108.9
C 15 214 220657 1617.49 589 594 136.1
C 0 10 141203 1033.49 589 594 136.1
C 15 159 17322 122.95 589 594 136.1
D 12 235 1824914 13088.72 568 552 139.4
D 2 249 1158754 8309.41 568 552 139.4
D 2 250 102325 730.16 568 552 139.4

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