ASTROSAT CZTI

Data Quality Report

Orbit 16680

Creation date: 2024-06-27T17:26:03.134437
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_101T09_9000002466_16680cztM0_level2.evt modeM0/AS1A05_101T09_9000002466_16680cztM0_level2_quad_clean.evt
Size (bytes)476,841,60095,653,440
Size454.8 MB 91.2 MB
Events in quadrant A2,884,004640,549
Events in quadrant B2,730,306660,376
Events in quadrant C2,414,160632,135
Events in quadrant D6,049,560588,646

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A12733597094080
B1-1-1
C1-1-1
D1-1-1

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122911
B0115621
C0108571
D0217871

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A53611713.189703%
B5361631.175154%
C5361581.081888%
D53614698.748368%

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 5362 5362 99 99 1.85% 1.85%
B 5362 5362 2 2 0.04% 0.04%
C 5362 5362 0 0 0.00% 0.00%
D 5362 5362 346 346 6.45% 6.45%

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 15 174 509483 4047.13 611 597 125.7
A 12 96 10064 75.29 611 597 125.7
A 14 254 8051 59.28 611 597 125.7
B 15 35 123008 1027.99 619 603 119.1
B 0 229 92571 772.37 619 603 119.1
B 0 189 34296 282.96 619 603 119.1
C 14 238 90677 648.6 592 596 138.9
C 3 233 7881 52.45 592 596 138.9
C 7 247 6774 44.48 592 596 138.9
D 2 16 2764571 19568.68 581 564 141.2
D 1 52 826416 5846.89 581 564 141.2
D 10 70 156863 1106.57 581 564 141.2

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