ASTROSAT CZTI

Data Quality Report

Orbit 41759

Creation date: 2024-06-27T22:32:30.338013
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_077T11_9000005696_41759cztM0_level2.fits modeM0/AS1A12_077T11_9000005696_41759cztM0_level2_quad_clean.evt
Size (bytes)476,340,48085,311,360
Size454.3 MB 81.4 MB
Events in quadrant A2,966,278597,998
Events in quadrant B2,505,674616,953
Events in quadrant C3,741,907556,599
Events in quadrant D7,992,444427,164

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119472
B0112202
C0142232
D0275252

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5490160.291439%
B548980.145746%
C54892504.554564%
D5489135624.703953%

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 7102 5491 4 4 0.06% 0.07%
B 7100 5489 3 3 0.04% 0.05%
C 7100 5488 252 252 3.55% 4.59%
D 7100 5488 1551 1551 21.85% 28.26%

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 535797 4216.76 614 600 126.9
A 10 255 30961 239.21 614 600 126.9
A 13 6 11085 82.61 614 600 126.9
B 0 245 83444 693.1 607 589 119.5
B 12 111 15471 124.49 607 589 119.5
B 0 183 15338 123.38 607 589 119.5
C 0 10 831626 6115.97 579 582 135.9
C 14 254 405957 2983.31 579 582 135.9
C 15 214 238605 1751.7 579 582 135.9
D 12 79 5093330 37105.33 551 534 137.3
D 2 249 372805 2712.31 551 534 137.3
D 13 249 150376 1091.73 551 534 137.3

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