ASTROSAT CZTI

Data Quality Report

Orbit 39885

Creation date: 2024-06-27T22:09:54.155127
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_032T03_9000005502_39885cztM0_level2.fits modeM0/AS1A12_032T03_9000005502_39885cztM0_level2_quad_clean.evt
Size (bytes)447,482,88091,080,000
Size426.8 MB 86.9 MB
Events in quadrant A3,625,848615,126
Events in quadrant B3,754,057625,784
Events in quadrant C2,839,242621,806
Events in quadrant D5,901,892495,884

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143343
B0149752
C0117832
D0214402

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A57051061.858019%
B57051612.822086%
C5705150.262927%
D570595616.757230%

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 7228 5706 76 76 1.05% 1.33%
B 7228 5706 94 94 1.30% 1.65%
C 7228 5706 10 10 0.14% 0.18%
D 7228 5706 879 879 12.16% 15.40%

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 572658 4490.88 623 611 127.4
A 14 250 377913 2962.03 623 611 127.4
A 6 10 90765 707.76 623 611 127.4
B 0 221 277785 2322.28 620 604 119.4
B 5 255 249226 2083.01 620 604 119.4
B 0 183 222693 1860.71 620 604 119.4
C 15 214 245320 1696.48 614 618 144.2
C 1 16 66990 460.15 614 618 144.2
C 14 254 43409 296.66 614 618 144.2
D 2 250 1158113 8116.73 572 555 142.6
D 12 227 1023582 7173.41 572 555 142.6
D 12 233 850688 5961.08 572 555 142.6

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