ASTROSAT CZTI

Data Quality Report

Orbit 50136

Creation date: 2025-01-04T20:34:12.690429
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/AS1C09_003T01_9000006442_50136cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50136cztM0_level2_quad_clean.evt
Size (bytes)1,521,855,36042,773,760
Size1.4 GB 40.8 MB
Events in quadrant A16,191,502144,597
Events in quadrant B5,526,767645,118
Events in quadrant C16,700,6722,243
Events in quadrant D17,365,9995,565

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0529890
B0213420
C0544620
D0563997

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7142582781.587791%
B714274610.445253%
C7142712699.775973%
D7141709399.327825%

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 7141 7141 4934 4934 69.09% 69.09%
B 7142 7142 493 493 6.90% 6.90%
C 7141 7141 6334 6334 88.70% 88.70%
D 7140 7140 6244 6244 87.45% 87.45%

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 0 98 12080928 96223.1 483 470 125.5
A 10 253 565632 4501.62 483 470 125.5
A 12 250 473567 3768.31 483 470 125.5
B 1 255 873869 5933.28 693 670 147.2
B 2 176 706931 4798.96 693 670 147.2
B 0 213 164240 1111.44 693 670 147.2
C 15 197 5972228 99324.19 180 177 60.1
C 4 111 2540897 42255.99 180 177 60.1
C 15 164 1388231 23085.43 180 177 60.1
D 7 61 5374335 61716.96 255 242 87.1
D 15 106 2328894 26742.62 255 242 87.1
D 15 58 1901858 21838.47 255 242 87.1

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