ASTROSAT CZTI

Data Quality Report

Orbit 39791

Creation date: 2024-06-27T22:09:01.743684
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_086T01_9000005496_39791cztM0_level2.fits modeM0/AS1T05_086T01_9000005496_39791cztM0_level2_quad_clean.evt
Size (bytes)482,932,80097,295,040
Size460.6 MB 92.8 MB
Events in quadrant A3,997,390664,270
Events in quadrant B3,001,399700,721
Events in quadrant C7,505,200582,950
Events in quadrant D2,949,053616,191

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152143
B0123972
C0261482
D0124302

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A54553746.856095%
B54551592.914757%
C5455106119.450046%
D5455731.338222%

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 7187 5456 262 262 3.65% 4.80%
B 7187 5456 46 46 0.64% 0.84%
C 7187 5455 960 960 13.36% 17.60%
D 7187 5456 56 56 0.78% 1.03%

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 9 143 964670 7349.03 625 614 131.2
A 10 83 443503 3376.16 625 614 131.2
A 2 79 110043 834.18 625 614 131.2
B 5 172 405589 3239.46 633 617 125.0
B 0 190 58546 463.39 633 617 125.0
B 4 171 45538 359.33 633 617 125.0
C 9 187 3706398 26807.49 583 590 138.2
C 15 208 1302199 9415.73 583 590 138.2
C 15 214 212841 1535.41 583 590 138.2
D 2 249 266873 1725.78 620 604 154.3
D 13 249 127276 821.0 620 604 154.3
D 12 227 90497 582.63 620 604 154.3

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