ASTROSAT CZTI

Data Quality Report

Orbit 16472

Creation date: 2024-06-27T17:23:06.809660
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/AS1C04_007T03_9000002436_16472cztM0_level2.evt modeM0/AS1C04_007T03_9000002436_16472cztM0_level2_quad_clean.evt
Size (bytes)426,729,60082,077,120
Size407.0 MB 78.3 MB
Events in quadrant A3,889,628537,344
Events in quadrant B3,057,968557,812
Events in quadrant C2,843,125525,498
Events in quadrant D2,783,592504,495

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149352
B0123701
C0115711
D0117291

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A51392795.429072%
B51391152.237789%
C51391132.198871%
D5139951.848609%

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 6445 5141 187 187 2.90% 3.64%
B 6445 5141 24 24 0.37% 0.47%
C 6445 5140 1 1 0.02% 0.02%
D 6445 5141 73 73 1.13% 1.42%

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 15 174 1394611 10534.77 650 639 132.3
A 0 226 5524 36.92 650 639 132.3
A 12 194 4722 30.86 650 639 132.3
B 4 173 193842 1542.58 664 652 125.2
B 10 16 89992 713.36 664 652 125.2
B 3 209 55538 438.25 664 652 125.2
C 3 233 248715 1696.88 632 640 146.2
C 14 238 99365 675.3 632 640 146.2
C 7 247 26095 174.12 632 640 146.2
D 1 52 263264 1707.1 630 615 153.9
D 2 33 98377 635.41 630 615 153.9
D 2 234 19672 123.86 630 615 153.9

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