ASTROSAT CZTI

Data Quality Report

Orbit 40759

Creation date: 2024-06-27T22:20:06.678909
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/AS1C07_001T10_9000005566_40759cztM0_level2.fits modeM0/AS1C07_001T10_9000005566_40759cztM0_level2_quad_clean.evt
Size (bytes)491,224,32086,184,000
Size468.5 MB 82.2 MB
Events in quadrant A3,506,648621,977
Events in quadrant B2,632,045642,546
Events in quadrant C8,612,500430,874
Events in quadrant D2,987,107513,524

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141003
B0118172
C0295072
D0128502

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5718801.399091%
B5718220.384750%
C5718208036.376355%
D571865211.402588%

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 7270 5719 43 43 0.59% 0.75%
B 7270 5719 6 6 0.08% 0.10%
C 7270 5719 1926 1926 26.49% 33.68%
D 7270 5719 64 64 0.88% 1.12%

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 538243 4156.61 627 614 129.3
A 6 10 428020 3304.44 627 614 129.3
A 12 189 77331 593.13 627 614 129.3
B 0 229 98511 805.04 626 609 121.6
B 4 171 31015 250.03 626 609 121.6
B 0 190 27900 224.41 626 609 121.6
C 9 187 6263884 51215.79 525 526 122.3
C 15 214 209398 1707.96 525 526 122.3
C 0 10 67104 544.41 525 526 122.3
D 12 191 187678 1311.0 578 561 142.7
D 2 249 148903 1039.33 578 561 142.7
D 9 19 105677 736.48 578 561 142.7

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