ASTROSAT CZTI

Data Quality Report

Orbit 40056

Creation date: 2024-06-27T22:11:47.344632
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_40056cztM0_level2.fits modeM0/AS1A12_054T03_9000005516_40056cztM0_level2_quad_clean.evt
Size (bytes)370,805,76090,829,440
Size353.6 MB 86.6 MB
Events in quadrant A2,757,505621,519
Events in quadrant B2,908,636638,038
Events in quadrant C3,619,523607,620
Events in quadrant D4,033,663517,391

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113573
B0122242
C0141782
D0156972

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5224120.229709%
B52241372.622511%
C5224941.799387%
D52244929.418070%

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 7376 5225 7 7 0.09% 0.13%
B 7376 5225 78 78 1.06% 1.49%
C 7376 5225 91 91 1.23% 1.74%
D 7376 5225 409 409 5.55% 7.83%

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 451351 3866.98 580 570 116.6
A 9 143 35228 297.31 580 570 116.6
A 7 3 11128 90.57 580 570 116.6
B 4 171 453874 4131.76 578 565 109.7
B 5 32 107426 974.0 578 565 109.7
B 0 221 56319 508.18 578 565 109.7
C 9 187 1155866 8826.13 565 570 130.9
C 15 214 216256 1647.78 565 570 130.9
C 0 10 20373 151.29 565 570 130.9
D 1 47 895603 6720.4 542 526 133.2
D 12 227 870766 6533.92 542 526 133.2
D 2 250 80534 600.71 542 526 133.2

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