ASTROSAT CZTI

Data Quality Report

Orbit 41487

Creation date: 2024-06-27T22:29:41.513860
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_035T02_9000005676_41487cztM0_level2.fits modeM0/AS1A12_035T02_9000005676_41487cztM0_level2_quad_clean.evt
Size (bytes)370,981,44088,050,240
Size353.8 MB 84.0 MB
Events in quadrant A2,919,088615,947
Events in quadrant B2,729,894623,533
Events in quadrant C4,048,572551,223
Events in quadrant D3,640,647520,630

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118383
B0115582
C0152802
D0142682

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5068230.453828%
B5068721.420679%
C50682995.899763%
D50683366.629834%

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 6981 5069 10 10 0.14% 0.20%
B 6981 5069 37 37 0.53% 0.73%
C 6981 5069 282 282 4.04% 5.56%
D 6981 5069 315 315 4.51% 6.21%

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 511188 4302.13 583 572 118.7
A 2 79 86515 724.1 583 572 118.7
A 13 248 37812 313.76 583 572 118.7
B 0 186 283312 2565.21 579 563 110.2
B 0 190 131609 1188.9 579 563 110.2
B 0 245 19780 174.34 579 563 110.2
C 9 54 1043297 8275.03 539 542 126.0
C 0 10 635823 5041.42 539 542 126.0
C 15 214 208692 1651.82 539 542 126.0
D 12 16 941948 7001.0 549 535 134.5
D 12 6 140017 1037.29 549 535 134.5
D 1 47 115120 852.13 549 535 134.5

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