ASTROSAT CZTI

Data Quality Report

Orbit 40301

Creation date: 2024-06-27T22:14:43.205777
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_056T02_9000005538_40301cztM0_level2.fits modeM0/AS1A12_056T02_9000005538_40301cztM0_level2_quad_clean.evt
Size (bytes)352,065,60098,118,720
Size335.8 MB 93.6 MB
Events in quadrant A3,107,342682,469
Events in quadrant B2,742,005701,955
Events in quadrant C3,182,893653,743
Events in quadrant D3,605,299577,615

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123583
B0111702
C0124882
D0140542

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5073390.768776%
B5073310.611078%
C5073480.946186%
D50732975.854524%

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 7166 5074 24 24 0.33% 0.47%
B 7166 5074 10 10 0.14% 0.20%
C 7166 5074 35 35 0.49% 0.69%
D 7166 5074 271 271 3.78% 5.34%

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 469766 3742.95 622 614 125.3
A 13 248 122818 974.96 622 614 125.3
A 12 189 44335 348.81 622 614 125.3
B 4 170 171708 1465.3 620 605 116.8
B 0 230 40655 342.98 620 605 116.8
B 4 171 37708 317.74 620 605 116.8
C 14 254 580729 4234.29 599 604 137.0
C 15 214 214953 1564.52 599 604 137.0
C 0 10 46394 334.22 599 604 137.0
D 12 227 827905 5801.64 581 565 142.6
D 2 250 257931 1804.75 581 565 142.6
D 12 233 157705 1101.93 581 565 142.6

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