ASTROSAT CZTI

Data Quality Report

Orbit 03878

Creation date: 2024-06-27T14:34:41.663825
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/AS1G05_083T01_9000000494_03878cztM0_level2.evt modeM0/AS1G05_083T01_9000000494_03878cztM0_level2_quad_clean.evt
Size (bytes)719,648,64074,888,640
Size686.3 MB 71.4 MB
Events in quadrant A3,388,921492,842
Events in quadrant B3,407,724499,402
Events in quadrant C11,272,145360,146
Events in quadrant D3,292,723467,380

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145212
B0144261
C0377931
D0145431

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6398821.281651%
B63981091.703657%
C6398345353.969991%
D6398801.250391%

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 7698 6398 39 39 0.51% 0.61%
B 7698 6398 49 49 0.64% 0.77%
C 7698 6399 3763 3763 48.88% 58.81%
D 7698 6399 58 58 0.75% 0.91%

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 0 118 402078 2697.89 737 721 148.8
A 0 226 44568 294.74 737 721 148.8
A 15 174 27448 179.66 737 721 148.8
B 15 204 306493 2175.19 749 732 140.6
B 4 81 122666 867.44 749 732 140.6
B 0 219 21355 146.71 749 732 140.6
C 2 53 8843955 63836.13 601 604 138.5
C 1 16 50235 358.26 601 604 138.5
C 10 65 18831 131.57 601 604 138.5
D 14 34 429652 2506.66 708 685 171.1
D 13 248 71470 413.63 708 685 171.1
D 13 239 36094 206.91 708 685 171.1

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