ASTROSAT CZTI

Data Quality Report

Orbit 39894

Creation date: 2024-06-27T22:10:02.864159
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_037T07_9000005504_39894cztM0_level2.fits modeM0/AS1A12_037T07_9000005504_39894cztM0_level2_quad_clean.evt
Size (bytes)272,721,60079,182,720
Size260.1 MB 75.5 MB
Events in quadrant A2,491,109539,290
Events in quadrant B2,144,616550,538
Events in quadrant C2,168,493523,417
Events in quadrant D2,949,334476,387

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0900
B0900
C0900
D0900

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0999054
B0916256
C0897440
D011688119

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0291
B0280
C0280
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A437890.205573%
B4376220.502742%
C438370.159708%
D43771222.787297%

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 7248 4384 4 4 0.06% 0.09%
B 7248 4383 14 14 0.19% 0.32%
C 7248 4390 5 5 0.07% 0.11%
D 7248 4385 118 118 1.63% 2.69%

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 413976 3898.42 518 508 106.1
A 6 10 25608 236.66 518 508 106.1
A 13 6 17030 155.78 518 508 106.1
B 4 171 74332 743.7 509 496 99.3
B 5 172 35126 348.81 509 496 99.3
B 0 230 16121 157.38 509 496 99.3
C 15 214 187110 1585.66 499 503 117.7
C 0 10 23297 193.69 499 503 117.7
C 14 254 6758 53.15 499 503 117.7
D 12 227 517389 4307.07 495 481 120.0
D 12 218 188641 1567.82 495 481 120.0
D 13 171 101789 844.14 495 481 120.0

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