ASTROSAT CZTI

Data Quality Report

Orbit 40054

Creation date: 2024-06-27T22:11:45.538010
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_054T03_9000005516_40054cztM0_level2.fits modeM0/AS1A12_054T03_9000005516_40054cztM0_level2_quad_clean.evt
Size (bytes)334,149,12091,039,680
Size318.7 MB 86.8 MB
Events in quadrant A2,790,918618,161
Events in quadrant B2,480,255649,183
Events in quadrant C3,407,000600,130
Events in quadrant D3,298,963536,373

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112843
B0106232
C0134122
D0134382

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5033220.437115%
B5033230.456984%
C50331492.960461%
D50332394.748659%

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 7064 5034 8 8 0.11% 0.16%
B 7064 5034 10 10 0.14% 0.20%
C 7064 5034 128 128 1.81% 2.54%
D 7064 5034 222 222 3.14% 4.41%

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 434212 3718.85 572 564 116.6
A 9 143 42861 362.73 572 564 116.6
A 13 248 36043 304.26 572 564 116.6
B 0 221 190986 1705.85 579 564 111.6
B 12 111 13366 114.68 579 564 111.6
B 11 111 12533 107.22 579 564 111.6
C 9 187 918474 7080.6 560 564 129.6
C 15 214 207446 1595.85 560 564 129.6
C 14 254 50988 388.96 560 564 129.6
D 12 233 347739 2601.89 545 529 133.4
D 2 250 328347 2456.57 545 529 133.4
D 12 227 227695 1702.31 545 529 133.4

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