ASTROSAT CZTI

Data Quality Report

Orbit 40803

Creation date: 2024-06-27T22:20:42.921280
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_099T03_9000005570_40803cztM0_level2.fits modeM0/AS1A12_099T03_9000005570_40803cztM0_level2_quad_clean.evt
Size (bytes)318,663,36091,851,840
Size303.9 MB 87.6 MB
Events in quadrant A2,964,305615,802
Events in quadrant B2,499,131631,899
Events in quadrant C2,757,612594,602
Events in quadrant D3,136,961545,963

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122643
B0114082
C0119312
D0134802

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5616140.249288%
B5616170.302707%
C5616540.961538%
D56161132.012108%

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 5617 5 5 0.07% 0.09%
B 7228 5617 4 4 0.06% 0.07%
C 7228 5617 42 42 0.58% 0.75%
D 7228 5617 112 112 1.55% 1.99%

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 548027 4299.8 615 602 127.3
A 2 79 14862 112.01 615 602 127.3
A 13 6 13146 98.53 615 602 127.3
B 0 190 40827 334.78 612 595 120.2
B 0 230 25708 208.97 612 595 120.2
B 5 255 22557 182.75 612 595 120.2
C 15 214 237248 1701.38 592 594 139.1
C 0 10 126139 902.58 592 594 139.1
C 14 254 76724 547.32 592 594 139.1
D 6 239 270202 1860.55 587 569 144.9
D 12 233 164375 1130.31 587 569 144.9
D 2 153 136753 939.71 587 569 144.9

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