ASTROSAT CZTI

Data Quality Report

Orbit 47597

Creation date: 2024-07-17T06:56:17.557193
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_037T05_9000006338_47597cztM0_level2.fits modeM0/AS1A13_037T05_9000006338_47597cztM0_level2_quad_clean.evt
Size (bytes)813,142,08099,673,920
Size775.5 MB 95.1 MB
Events in quadrant A8,514,893813,680
Events in quadrant B3,831,806851,588
Events in quadrant C3,775,389805,808
Events in quadrant D13,375,3239,214

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0308210
B0166370
C0170540
D0451424

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77293484.502523%
B7729851.099754%
C7730690.892626%
D7729765599.042567%

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 7729 7729 106 106 1.37% 1.37%
B 7729 7729 22 22 0.28% 0.28%
C 7730 7730 51 51 0.66% 0.66%
D 7729 7726 2964 2964 38.35% 38.36%

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 4113275 23018.78 852 832 178.7
A 9 191 657318 3674.58 852 832 178.7
A 15 235 181476 1011.13 852 832 178.7
B 0 200 150557 885.06 857 830 169.2
B 5 29 134736 791.54 857 830 169.2
B 8 234 41058 237.8 857 830 169.2
C 3 233 459374 2334.44 836 842 196.4
C 12 250 31211 154.61 836 842 196.4
C 14 67 13899 66.47 836 842 196.4
D 12 2 12869969 535277.09 89 85 24.0
D 2 165 55258 2294.72 89 85 24.0
D 2 249 53416 2218.11 89 85 24.0

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