ASTROSAT CZTI

Data Quality Report

Orbit 40009

Creation date: 2024-06-27T22:11:13.544872
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_054T03_9000005516_40009cztM0_level2.fits modeM0/AS1A12_054T03_9000005516_40009cztM0_level2_quad_clean.evt
Size (bytes)310,656,96090,207,360
Size296.3 MB 86.0 MB
Events in quadrant A2,800,316602,399
Events in quadrant B2,689,207619,245
Events in quadrant C2,550,228601,682
Events in quadrant D3,053,405542,819

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116483
B0116502
C0107742
D0127532

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5214370.709628%
B5214971.860376%
C521450.095896%
D5214861.649405%

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 7035 5215 27 27 0.38% 0.52%
B 7035 5215 72 72 1.02% 1.38%
C 7035 5215 4 4 0.06% 0.08%
D 7035 5215 78 78 1.11% 1.50%

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 432511 3680.38 575 566 117.4
A 13 248 108214 917.21 575 566 117.4
A 2 79 24531 204.19 575 566 117.4
B 4 171 424653 3847.23 573 559 110.2
B 12 111 13904 121.06 573 559 110.2
B 11 111 12542 108.71 573 559 110.2
C 15 214 218120 1644.84 568 574 132.3
C 9 54 35838 266.63 568 574 132.3
C 15 208 31586 234.48 568 574 132.3
D 12 227 589806 4240.5 559 543 139.0
D 2 250 206141 1479.54 559 543 139.0
D 13 249 105633 756.26 559 543 139.0

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