ASTROSAT CZTI

Data Quality Report

Orbit 38997

Creation date: 2024-06-27T21:59:07.861557
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_095T02_9000005420_38997cztM0_level2.fits modeM0/AS1A12_095T02_9000005420_38997cztM0_level2_quad_clean.evt
Size (bytes)403,335,36098,291,520
Size384.7 MB 93.7 MB
Events in quadrant A5,332,671630,998
Events in quadrant B2,955,092689,076
Events in quadrant C2,750,800682,955
Events in quadrant D3,497,027618,268

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0193513
B0119792
C0113212
D0137952

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A507570213.832512%
B50751823.586207%
C5075110.216749%
D50751643.231527%

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 7109 5076 677 677 9.52% 13.34%
B 7109 5076 127 127 1.79% 2.50%
C 7109 5076 5 5 0.07% 0.10%
D 7109 5076 152 152 2.14% 2.99%

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 15 222 2390698 19272.21 615 605 124.0
A 10 83 410225 3302.92 615 605 124.0
A 9 143 82684 661.83 615 605 124.0
B 5 172 407609 3414.46 628 610 119.2
B 0 230 60525 502.65 628 610 119.2
B 5 184 16656 134.61 628 610 119.2
C 15 214 210279 1430.52 635 640 146.5
C 2 16 39101 262.45 635 640 146.5
C 0 207 7142 44.37 635 640 146.5
D 12 235 560267 3698.88 625 609 151.3
D 2 249 235557 1552.82 625 609 151.3
D 13 249 128601 845.92 625 609 151.3

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