ASTROSAT CZTI

Data Quality Report

Orbit 50540

Creation date: 2025-01-31T14:52:44.916321
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_239T01_9000006444_50540cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50540cztM0_level2_quad_clean.evt
Size (bytes)703,592,64096,422,400
Size671.0 MB 92.0 MB
Events in quadrant A6,418,329601,856
Events in quadrant B6,359,853658,084
Events in quadrant C6,684,424556,967
Events in quadrant D6,015,105593,273

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240610
B0238940
C0250442
D0229990

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7314107414.684167%
B7315103714.176350%
C7314139219.031993%
D73145397.369428%

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 7314 7314 539 539 7.37% 7.37%
B 7315 7315 535 535 7.31% 7.31%
C 7314 7314 584 584 7.98% 7.98%
D 7314 7314 414 414 5.66% 5.66%

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 12 250 1331003 6948.3 777 756 191.4
A 3 130 579824 3024.65 777 756 191.4
A 8 247 454410 2369.58 777 756 191.4
B 4 170 1488175 9019.94 770 743 164.9
B 1 223 817948 4955.62 770 743 164.9
B 0 229 327028 1978.63 770 743 164.9
C 4 12 682477 3402.11 720 715 200.4
C 15 196 644174 3210.97 720 715 200.4
C 12 252 345652 1721.3 720 715 200.4
D 6 42 892262 4220.51 766 738 211.2
D 8 246 494991 2339.81 766 738 211.2
D 2 249 294735 1391.79 766 738 211.2

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