ASTROSAT CZTI

Data Quality Report

Orbit 43761

Creation date: 2024-06-27T22:55:27.164267
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_026T01_9000005904_43761cztM0_level2.fits modeM0/AS1A13_026T01_9000005904_43761cztM0_level2_quad_clean.evt
Size (bytes)508,317,120104,656,320
Size484.8 MB 99.8 MB
Events in quadrant A4,749,946712,473
Events in quadrant B3,897,906742,415
Events in quadrant C3,710,294709,013
Events in quadrant D5,966,411563,230

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0188981
B0155641
C0152491
D0220411

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63312253.553941%
B63312123.348602%
C63312123.348602%
D6332103316.313961%

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 7386 6332 74 74 1.00% 1.17%
B 7386 6332 92 92 1.25% 1.45%
C 7386 6332 138 138 1.87% 2.18%
D 7387 6332 508 508 6.88% 8.02%

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 910044 5946.18 743 728 152.9
A 14 63 213962 1394.38 743 728 152.9
A 13 248 212149 1382.52 743 728 152.9
B 0 200 283866 1942.64 745 722 145.8
B 5 235 234446 1603.57 745 722 145.8
B 4 80 148685 1015.17 745 722 145.8
C 15 158 551907 3251.81 726 730 169.5
C 14 254 135378 794.39 726 730 169.5
C 14 96 64499 376.22 726 730 169.5
D 13 249 776889 4406.24 678 657 176.2
D 4 212 716153 4061.47 678 657 176.2
D 5 235 446872 2532.91 678 657 176.2

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