ASTROSAT CZTI

Data Quality Report

Orbit 37378

Creation date: 2024-06-27T21:39:12.912034
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_048T01_9000005318_37378cztM0_level2.evt modeM0/AS1T05_048T01_9000005318_37378cztM0_level2_quad_clean.evt
Size (bytes)513,221,76061,470,720
Size489.4 MB 58.6 MB
Events in quadrant A2,627,892391,891
Events in quadrant B2,540,389400,663
Events in quadrant C2,625,677403,549
Events in quadrant D7,406,320310,069

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107183
B0105682
C0105832
D0256052

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A505490.178077%
B5054240.474871%
C5054170.336367%
D5054120123.763356%

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 7087 5055 3 3 0.04% 0.06%
B 7087 5055 11 11 0.16% 0.22%
C 7087 5055 11 11 0.16% 0.22%
D 7087 5055 1209 1209 17.06% 23.92%

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 272074 2257.05 601 590 120.3
A 13 248 14348 114.38 601 590 120.3
A 13 6 7615 58.4 601 590 120.3
B 5 172 88944 766.69 600 585 115.2
B 0 245 30876 262.83 600 585 115.2
B 0 190 14602 121.63 600 585 115.2
C 15 214 217931 1599.14 589 595 135.9
C 0 10 70203 512.17 589 595 135.9
C 15 208 9547 65.87 589 595 135.9
D 12 235 3816542 28512.85 541 526 133.8
D 2 249 1009845 7541.52 541 526 133.8
D 12 227 408153 3045.74 541 526 133.8

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