ASTROSAT CZTI

Data Quality Report

Orbit 38966

Creation date: 2024-06-27T21:58:43.921645
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/AS1T05_064T01_9000005416_38966cztM0_level2.fits modeM0/AS1T05_064T01_9000005416_38966cztM0_level2_quad_clean.evt
Size (bytes)402,079,68095,181,120
Size383.5 MB 90.8 MB
Events in quadrant A2,977,334665,789
Events in quadrant B2,752,914670,921
Events in quadrant C5,201,745565,934
Events in quadrant D3,520,163591,610

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122372
B0117491
C0189291
D0141081

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5548180.324441%
B5548130.234319%
C554874713.464311%
D55481122.018745%

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 7342 5549 2 2 0.03% 0.04%
B 7342 5549 11 11 0.15% 0.20%
C 7342 5549 753 753 10.26% 13.57%
D 7342 5549 117 117 1.59% 2.11%

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 451438 3525.77 633 619 127.9
A 15 222 45398 350.21 633 619 127.9
A 13 248 13113 97.71 633 619 127.9
B 5 172 177164 1483.03 624 607 119.1
B 0 230 89564 747.21 624 607 119.1
B 0 229 15804 127.65 624 607 119.1
C 14 254 2644725 19682.46 581 586 134.3
C 15 214 232315 1724.95 581 586 134.3
C 12 249 22111 160.23 581 586 134.3
D 2 250 307181 2053.21 615 598 149.3
D 12 233 280045 1871.48 615 598 149.3
D 2 249 134335 895.65 615 598 149.3

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