ASTROSAT CZTI

Data Quality Report

Orbit 38677

Creation date: 2024-06-27T21:54:58.867060
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_054T01_9000005392_38677cztM0_level2.fits modeM0/AS1A12_054T01_9000005392_38677cztM0_level2_quad_clean.evt
Size (bytes)388,290,24095,996,160
Size370.3 MB 91.5 MB
Events in quadrant A2,876,107664,458
Events in quadrant B5,416,094630,724
Events in quadrant C2,716,660645,458
Events in quadrant D2,935,649580,728

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119513
B0197372
C0115072
D0126952

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5509220.399347%
B550968912.506807%
C5509110.199673%
D55091432.595752%

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 7391 5510 12 12 0.16% 0.22%
B 7391 5510 489 489 6.62% 8.87%
C 7391 5510 5 5 0.07% 0.09%
D 7391 5510 113 113 1.53% 2.05%

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 404284 3189.7 626 616 126.6
A 15 174 30099 232.97 626 616 126.6
A 13 248 16301 123.94 626 616 126.6
B 4 251 2865648 24459.85 601 584 117.1
B 4 171 149399 1270.48 601 584 117.1
B 0 230 15587 128.08 601 584 117.1
C 15 214 223772 1567.26 610 613 142.4
C 15 208 64848 451.13 610 613 142.4
C 0 10 24889 170.49 610 613 142.4
D 10 118 221577 1532.58 596 578 144.2
D 13 249 173271 1197.59 596 578 144.2
D 2 250 78355 539.37 596 578 144.2

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