ASTROSAT CZTI

Data Quality Report

Orbit 42696

Creation date: 2024-06-27T22:43:10.583096
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/AS1A05_013T01_9000005822_42696cztM0_level2.fits modeM0/AS1A05_013T01_9000005822_42696cztM0_level2_quad_clean.evt
Size (bytes)395,363,52094,452,480
Size377.0 MB 90.1 MB
Events in quadrant A3,266,238646,257
Events in quadrant B3,143,830643,231
Events in quadrant C2,798,956633,407
Events in quadrant D4,970,607527,875

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130742
B0134222
C0119212
D0186922

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0280
C0280
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5850290.495726%
B58501442.461538%
C585040.068376%
D585068611.726496%

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 7254 5851 19 19 0.26% 0.32%
B 7254 5851 108 108 1.49% 1.85%
C 7254 5851 0 0 0.00% 0.00%
D 7254 5851 617 617 8.51% 10.55%

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 625778 4746.27 643 632 131.7
A 13 248 135241 1021.99 643 632 131.7
A 13 254 9825 69.8 643 632 131.7
B 0 229 606701 4903.28 631 615 123.6
B 5 172 28457 225.24 631 615 123.6
B 12 111 15465 120.14 631 615 123.6
C 15 214 246535 1687.47 624 626 145.7
C 8 79 48048 325.42 624 626 145.7
C 14 254 21488 143.16 624 626 145.7
D 1 47 1297536 8917.65 588 572 145.4
D 1 52 801629 5507.9 588 572 145.4
D 2 249 247903 1700.6 588 572 145.4

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