ASTROSAT CZTI

Data Quality Report

Orbit 41470

Creation date: 2024-06-27T22:29:27.305699
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_014T01_9000005674_41470cztM0_level2.fits modeM0/AS1A12_014T01_9000005674_41470cztM0_level2_quad_clean.evt
Size (bytes)349,611,84085,147,200
Size333.4 MB 81.2 MB
Events in quadrant A2,683,041575,944
Events in quadrant B2,737,785578,570
Events in quadrant C2,913,807547,696
Events in quadrant D4,197,770507,631

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112952
B0117561
C0120111
D0160291

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5255120.228354%
B5255841.598478%
C52551633.101808%
D52552164.110371%

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 6958 5256 2 2 0.03% 0.04%
B 6958 5256 46 46 0.66% 0.88%
C 6958 5256 139 139 2.00% 2.64%
D 6958 5256 256 256 3.68% 4.87%

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 488900 4224.86 562 549 115.6
A 2 79 12571 104.01 562 549 115.6
A 13 254 8079 65.14 562 549 115.6
B 0 190 234951 2189.5 557 541 107.1
B 0 245 128182 1192.23 557 541 107.1
B 5 255 72058 668.0 557 541 107.1
C 0 10 352039 2737.44 544 546 128.4
C 15 214 215462 1673.77 544 546 128.4
C 4 254 171707 1333.01 544 546 128.4
D 5 222 1049171 7900.27 547 532 132.7
D 12 79 424517 3194.23 547 532 132.7
D 1 47 290159 2182.0 547 532 132.7

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