ASTROSAT CZTI

Data Quality Report

Orbit 39727

Creation date: 2024-06-27T22:08:17.578779
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/AS1A12_022T01_9000005494_39727cztM0_level2.fits modeM0/AS1A12_022T01_9000005494_39727cztM0_level2_quad_clean.evt
Size (bytes)356,235,84096,042,240
Size339.7 MB 91.6 MB
Events in quadrant A3,244,379639,464
Events in quadrant B3,186,768653,944
Events in quadrant C3,305,654629,091
Events in quadrant D2,998,190579,919

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134422
B0134371
C0136281
D0131711

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5802951.637366%
B5802911.568425%
C5802651.120303%
D5802831.430541%

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 7114 5803 48 48 0.67% 0.83%
B 7114 5803 60 60 0.84% 1.03%
C 7114 5803 39 39 0.55% 0.67%
D 7114 5803 71 71 1.00% 1.22%

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 463322 3599.64 627 613 128.5
A 15 174 234462 1819.22 627 613 128.5
A 13 248 93575 723.2 627 613 128.5
B 5 255 410624 3335.54 628 611 122.9
B 5 172 224964 1825.16 628 611 122.9
B 0 190 36802 294.42 628 611 122.9
C 15 208 380404 2646.97 615 618 143.5
C 15 214 240580 1672.45 615 618 143.5
C 9 187 235093 1634.21 615 618 143.5
D 12 227 234918 1549.85 615 597 151.2
D 13 249 154306 1016.66 615 597 151.2
D 12 233 111300 732.21 615 597 151.2

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