ASTROSAT CZTI

Data Quality Report

Orbit 40507

Creation date: 2024-06-27T22:16:57.890636
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_097T02_9000005542_40507cztM0_level2.fits modeM0/AS1A12_097T02_9000005542_40507cztM0_level2_quad_clean.evt
Size (bytes)353,963,52088,588,800
Size337.6 MB 84.5 MB
Events in quadrant A2,994,585619,302
Events in quadrant B3,582,506617,222
Events in quadrant C2,749,501600,645
Events in quadrant D3,348,377462,097

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122413
B0143552
C0116452
D0136422

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5478200.365097%
B54781763.212851%
C5478390.711939%
D5478115421.066083%

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 7299 5479 5 5 0.07% 0.09%
B 7299 5479 156 156 2.14% 2.85%
C 7299 5479 27 27 0.37% 0.49%
D 7298 5478 112 112 1.53% 2.04%

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 532178 4312.4 598 587 123.3
A 12 189 85714 690.57 598 587 123.3
A 2 79 51438 412.52 598 587 123.3
B 4 170 517612 4480.84 587 571 115.4
B 5 32 331653 2869.26 587 571 115.4
B 3 112 290476 2512.41 587 571 115.4
C 15 214 236878 1715.55 582 585 137.7
C 14 254 138350 1000.21 582 585 137.7
C 10 20 55206 396.56 582 585 137.7
D 12 227 542933 4120.06 525 511 131.7
D 12 191 262957 1993.45 525 511 131.7
D 2 250 141263 1069.11 525 511 131.7

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