ASTROSAT CZTI

Data Quality Report

Orbit 45622

Creation date: 2024-06-27T23:14:19.574604
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/AS1A13_071T08_9000006114_45622cztM0_level2.fits modeM0/AS1A13_071T08_9000006114_45622cztM0_level2_quad_clean.evt
Size (bytes)695,566,080107,899,200
Size663.3 MB 102.9 MB
Events in quadrant A6,426,736763,261
Events in quadrant B4,559,952765,177
Events in quadrant C3,514,728766,495
Events in quadrant D10,689,324471,713

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240932
B0184582
C0157772
D0366462

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71833605.011833%
B71835697.921481%
C71831221.698455%
D7182266437.092732%

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 7803 7184 8 8 0.10% 0.11%
B 7803 7184 265 265 3.40% 3.69%
C 7803 7184 47 47 0.60% 0.65%
D 7802 7183 2417 2417 30.98% 33.65%

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 3205373 18943.02 814 797 169.2
A 0 243 23035 131.45 814 797 169.2
A 10 255 18340 103.7 814 797 169.2
B 3 112 394181 2482.92 802 776 158.4
B 5 172 319180 2009.56 802 776 158.4
B 4 171 288524 1816.08 802 776 158.4
C 14 254 267895 1419.6 797 798 188.1
C 0 207 98108 517.2 797 798 188.1
C 2 14 23206 119.1 797 798 188.1
D 11 241 3479393 19877.41 689 668 175.0
D 8 48 1829505 10449.96 689 668 175.0
D 8 129 1204884 6880.88 689 668 175.0

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