ASTROSAT CZTI

Data Quality Report

Orbit 48621

Creation date: 2024-09-24T07:05:55.119091
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_037T01_9000006436_48621cztM0_level2.fits modeM0/AS1A13_037T01_9000006436_48621cztM0_level2_quad_clean.evt
Size (bytes)423,999,360105,805,440
Size404.4 MB 100.9 MB
Events in quadrant A6,610,628679,185
Events in quadrant B2,936,136741,695
Events in quadrant C2,712,160709,283
Events in quadrant D2,942,301630,439

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0238042
B0133963
C0129102
D0136462

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63562784.373820%
B6355580.912667%
C6355100.157356%
D6355430.676633%

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 7561 6357 143 143 1.89% 2.25%
B 7560 6356 11 11 0.15% 0.17%
C 7560 6356 0 0 0.00% 0.00%
D 7560 6356 26 26 0.34% 0.41%

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 3889936 27051.04 686 672 143.8
A 13 248 51308 352.19 686 672 143.8
A 0 31 14825 98.44 686 672 143.8
B 12 16 121087 874.01 701 679 137.8
B 5 255 21419 150.54 701 679 137.8
B 12 111 17399 121.36 701 679 137.8
C 14 254 6001 32.4 692 694 163.8
C 14 67 5616 30.05 692 694 163.8
C 12 249 4616 23.94 692 694 163.8
D 10 199 128814 765.61 676 656 167.4
D 2 249 73807 437.0 676 656 167.4
D 7 96 49754 293.31 676 656 167.4

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