ASTROSAT CZTI

Data Quality Report

Orbit 43445

Creation date: 2024-06-27T22:52:04.176139
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_018T01_9000005874_43445cztM0_level2.fits modeM0/AS1A12_018T01_9000005874_43445cztM0_level2_quad_clean.evt
Size (bytes)540,576,00072,446,400
Size515.5 MB 69.1 MB
Events in quadrant A9,243,139200,807
Events in quadrant B2,687,227606,473
Events in quadrant C2,360,980581,943
Events in quadrant D5,333,917457,502

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0308432
B0112512
C0100902
D0193032

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0300
C0300
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4948323865.440582%
B4948340.687146%
C494880.161681%
D494882216.612773%

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 7040 4947 2859 2859 40.61% 57.79%
B 7041 4949 19 19 0.27% 0.38%
C 7041 4949 2 2 0.03% 0.04%
D 7041 4949 825 825 11.72% 16.67%

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 7813287 140818.16 265 260 55.5
A 10 83 274929 4950.5 265 260 55.5
A 15 237 111397 2003.08 265 260 55.5
B 0 190 244139 2359.39 547 532 103.2
B 0 199 107192 1033.03 547 532 103.2
B 0 189 88636 853.31 547 532 103.2
C 15 214 204835 1644.64 539 543 124.2
C 3 233 31821 251.8 539 543 124.2
C 12 249 10125 77.14 539 543 124.2
D 1 52 1662580 13985.39 485 470 118.8
D 1 20 805303 6772.06 485 470 118.8
D 2 16 307303 2581.77 485 470 118.8

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