ASTROSAT CZTI

Data Quality Report

Orbit 47901

Creation date: 2024-08-06T21:05:19.476636
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/AS1A09_038T30_9000006372_47901cztM0_level2.fits modeM0/AS1A09_038T30_9000006372_47901cztM0_level2_quad_clean.evt
Size (bytes)278,277,12056,085,120
Size265.4 MB 53.5 MB
Events in quadrant A3,630,560373,513
Events in quadrant B1,969,707372,429
Events in quadrant C1,577,969376,555
Events in quadrant D2,836,773316,744

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0720
B0720
C0720
D0720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136190
B086100
C076870
D0111058

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3663190.518701%
B3663752.047502%
C3664220.600437%
D366337910.346710%

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 3663 3663 5 5 0.14% 0.14%
B 3663 3663 55 55 1.50% 1.50%
C 3664 3664 15 15 0.41% 0.41%
D 3664 3664 314 314 8.57% 8.57%

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 2141465 27075.2 370 361 79.1
A 13 6 24727 308.12 370 361 79.1
A 7 3 18128 224.67 370 361 79.1
B 5 255 391950 5346.56 364 353 73.2
B 7 221 50594 685.95 364 353 73.2
B 4 171 37825 511.61 364 353 73.2
C 12 2 140750 1623.75 363 365 86.5
C 14 254 11900 133.42 363 365 86.5
C 12 250 9423 104.77 363 365 86.5
D 2 37 810861 9113.54 347 334 88.9
D 13 29 405897 4560.14 347 334 88.9
D 2 165 127287 1427.46 347 334 88.9

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