ASTROSAT CZTI

Data Quality Report

Orbit 51018

Creation date: 2025-03-04T18:44:00.194712
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/AS1C07_001T02_9000006452_51018cztM0_level2.fits modeM0/AS1C07_001T02_9000006452_51018cztM0_level2_quad_clean.evt
Size (bytes)565,162,56099,748,800
Size539.0 MB 95.1 MB
Events in quadrant A5,078,461655,899
Events in quadrant B5,572,181679,475
Events in quadrant C5,131,674602,912
Events in quadrant D4,587,637588,403

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0199452
B0213982
C0202022
D0185592

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70953054.298802%
B70947009.867494%
C70945667.978573%
D70943024.257119%

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 7925 7096 121 121 1.53% 1.71%
B 7924 7095 354 354 4.47% 4.99%
C 7924 7095 428 428 5.40% 6.03%
D 7924 7095 166 166 2.09% 2.34%

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 12 3 996356 5282.65 753 734 188.5
A 14 254 247338 1308.45 753 734 188.5
A 8 38 125600 662.52 753 734 188.5
B 4 81 669290 4336.83 727 699 154.2
B 4 171 562025 3641.05 727 699 154.2
B 12 32 551951 3575.71 727 699 154.2
C 15 229 652858 3331.02 710 704 195.8
C 9 38 473423 2414.52 710 704 195.8
C 15 147 231950 1181.14 710 704 195.8
D 6 42 518891 2589.69 722 694 200.1
D 2 216 349200 1741.66 722 694 200.1
D 8 176 322553 1608.49 722 694 200.1

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