ASTROSAT CZTI

Data Quality Report

Orbit 41765

Creation date: 2024-06-27T22:32:35.991115
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_044T19_9000005698_41765cztM0_level2.fits modeM0/AS1A12_044T19_9000005698_41765cztM0_level2_quad_clean.evt
Size (bytes)409,887,36086,224,320
Size390.9 MB 82.2 MB
Events in quadrant A2,929,252625,509
Events in quadrant B2,621,371627,969
Events in quadrant C3,161,753565,956
Events in quadrant D6,061,587432,347

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117642
B0109712
C0125542
D0215256

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5121140.273384%
B5121180.351494%
C51212564.999024%
D5120132125.800781%

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 7243 5122 3 3 0.04% 0.06%
B 7242 5120 11 11 0.15% 0.21%
C 7243 5122 256 256 3.53% 5.00%
D 7242 5121 1353 1353 18.68% 26.42%

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 559493 4547.45 596 584 122.9
A 2 79 33074 264.35 596 584 122.9
A 13 6 16717 131.26 596 584 122.9
B 0 186 104031 914.55 584 568 113.1
B 0 245 84041 737.85 584 568 113.1
B 3 112 43278 377.53 584 568 113.1
C 0 10 774467 6081.0 545 549 127.3
C 15 214 216479 1696.65 545 549 127.3
C 14 67 22878 175.45 545 549 127.3
D 13 249 2483566 19891.29 498 484 124.8
D 12 79 1206476 9660.87 498 484 124.8
D 2 249 179970 1437.81 498 484 124.8

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