ASTROSAT CZTI

Data Quality Report

Orbit 43784

Creation date: 2024-06-27T22:55:44.510626
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/AS1A13_018T01_9000005906_43784cztM0_level2.fits modeM0/AS1A13_018T01_9000005906_43784cztM0_level2_quad_clean.evt
Size (bytes)634,406,40089,190,720
Size605.0 MB 85.1 MB
Events in quadrant A5,778,807585,792
Events in quadrant B4,322,437658,101
Events in quadrant C5,448,917592,144
Events in quadrant D7,468,485445,002

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0215201
B0169690
C0203720
D0263090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A600184414.064323%
B60012644.399267%
C600167611.264789%
D6001159726.612231%

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 6001 6001 587 587 9.78% 9.78%
B 6001 6001 126 126 2.10% 2.10%
C 6001 6001 531 531 8.85% 8.85%
D 6001 6001 1261 1261 21.01% 21.01%

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 15 223 2107536 15185.62 656 642 138.7
A 10 83 772861 5565.83 656 642 138.7
A 13 248 295543 2125.52 656 642 138.7
B 5 235 766350 5708.92 685 666 134.1
B 5 172 172262 1279.42 685 666 134.1
B 4 170 144705 1073.95 685 666 134.1
C 15 158 1481429 9717.45 644 648 152.4
C 15 174 1005818 6596.31 644 648 152.4
C 15 190 138771 906.42 644 648 152.4
D 5 235 2086330 13496.91 592 574 154.5
D 12 233 745551 4820.74 592 574 154.5
D 10 102 454511 2937.42 592 574 154.5

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