ASTROSAT CZTI

Data Quality Report

Orbit 38612

Creation date: 2024-06-27T21:54:07.599523
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/AS1A12_052T04_9000005388_38612cztM0_level2.fits modeM0/AS1A12_052T04_9000005388_38612cztM0_level2_quad_clean.evt
Size (bytes)422,104,32096,264,000
Size402.6 MB 91.8 MB
Events in quadrant A3,082,336654,365
Events in quadrant B3,519,642657,708
Events in quadrant C2,955,117630,752
Events in quadrant D5,621,515570,062

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126543
B0141412
C0123812
D0206272

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5748370.643702%
B57481172.035491%
C5748250.434934%
D57483105.393180%

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 7058 5749 26 26 0.37% 0.45%
B 7058 5749 69 69 0.98% 1.20%
C 7058 5749 25 25 0.35% 0.43%
D 7058 5749 305 305 4.32% 5.31%

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 440327 3348.61 645 632 131.3
A 9 143 60210 453.73 645 632 131.3
A 0 52 34017 254.25 645 632 131.3
B 0 183 293533 2377.49 641 625 123.2
B 5 172 261315 2115.98 641 625 123.2
B 4 251 114559 924.79 641 625 123.2
C 15 214 232993 1587.0 624 630 146.4
C 14 254 190189 1294.65 624 630 146.4
C 0 10 37263 250.2 624 630 146.4
D 2 16 1783972 11895.36 614 597 149.9
D 1 20 375053 2497.67 614 597 149.9
D 12 227 190704 1268.04 614 597 149.9

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