ASTROSAT CZTI

Data Quality Report

Orbit 42399

Creation date: 2024-06-27T22:39:49.596123
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_138T01_9000005802_42399cztM0_level2.fits modeM0/AS1T05_138T01_9000005802_42399cztM0_level2_quad_clean.evt
Size (bytes)347,811,84093,680,640
Size331.7 MB 89.3 MB
Events in quadrant A3,032,931633,988
Events in quadrant B2,710,727648,855
Events in quadrant C3,308,413602,921
Events in quadrant D3,385,109558,067

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122462
B0119632
C0133202
D0139152

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5618120.213599%
B5618470.836597%
C56181953.470986%
D56191382.455953%

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 9055 5620 3 3 0.03% 0.05%
B 9055 5620 30 30 0.33% 0.53%
C 9055 5620 147 147 1.62% 2.62%
D 9056 5621 88 88 0.97% 1.57%

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 577742 4494.43 627 614 128.4
A 13 6 16470 123.48 627 614 128.4
A 13 248 8007 57.57 627 614 128.4
B 5 172 80381 668.6 621 605 119.3
B 5 255 80050 665.82 621 605 119.3
B 0 245 42611 352.05 621 605 119.3
C 4 254 716035 5105.59 599 601 140.1
C 15 214 232897 1657.75 599 601 140.1
C 14 254 13383 91.22 599 601 140.1
D 2 16 369180 2513.3 602 585 146.7
D 2 249 130349 884.81 602 585 146.7
D 1 52 127832 867.65 602 585 146.7

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