ASTROSAT CZTI

Data Quality Report

Orbit 42682

Creation date: 2024-06-27T22:43:00.175658
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/AS1A05_013T01_9000005822_42682cztM0_level2.fits modeM0/AS1A05_013T01_9000005822_42682cztM0_level2_quad_clean.evt
Size (bytes)394,067,52093,686,400
Size375.8 MB 89.3 MB
Events in quadrant A3,303,382634,500
Events in quadrant B2,740,327644,659
Events in quadrant C3,468,031615,562
Events in quadrant D4,622,641535,497

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131501
B0121641
C0139681
D0176851

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5817911.564380%
B5818330.567205%
C58181202.062564%
D58185389.247164%

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 7130 5818 66 66 0.93% 1.13%
B 7131 5819 27 27 0.38% 0.46%
C 7131 5819 98 98 1.37% 1.68%
D 7131 5819 530 530 7.43% 9.11%

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 577194 4406.83 635 622 130.8
A 13 248 230314 1755.57 635 622 130.8
A 15 237 16474 121.16 635 622 130.8
B 0 245 75235 610.92 628 610 122.2
B 5 172 46909 379.03 628 610 122.2
B 5 255 41902 338.04 628 610 122.2
C 8 79 497752 3449.53 614 617 144.1
C 15 214 244279 1690.73 614 617 144.1
C 14 254 183474 1268.81 614 617 144.1
D 1 52 869217 5918.59 599 580 146.8
D 12 233 801675 5458.38 599 580 146.8
D 2 249 393112 2674.57 599 580 146.8

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