ASTROSAT CZTI

Data Quality Report

Orbit 47922

Creation date: 2024-08-08T03:27:59.528833
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_025T02_9000006380_47922cztM0_level2.fits modeM0/AS1A13_025T02_9000006380_47922cztM0_level2_quad_clean.evt
Size (bytes)529,162,560101,819,520
Size504.6 MB 97.1 MB
Events in quadrant A7,244,492670,848
Events in quadrant B3,010,143720,033
Events in quadrant C2,985,432688,709
Events in quadrant D5,852,255556,985

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0258401
B0134081
C0134614
D0219351

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63894466.980748%
B6390590.923318%
C6388600.939261%
D639087213.646322%

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 7470 6390 157 157 2.10% 2.46%
B 7471 6391 3 3 0.04% 0.05%
C 7471 6390 28 28 0.37% 0.44%
D 7471 6391 756 756 10.12% 11.83%

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 3684519 25152.27 701 686 146.5
A 0 31 672483 4586.86 701 686 146.5
A 13 248 173373 1179.06 701 686 146.5
B 5 255 95477 670.34 715 691 141.4
B 0 198 32934 228.03 715 691 141.4
B 0 200 21902 150.01 715 691 141.4
C 14 254 179363 1077.25 706 710 165.8
C 12 2 27155 159.46 706 710 165.8
C 14 67 9835 55.02 706 710 165.8
D 2 37 3099948 18416.11 670 650 168.3
D 2 249 75570 445.17 670 650 168.3
D 2 234 30583 177.86 670 650 168.3

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