ASTROSAT CZTI

Data Quality Report

Orbit 19407

Creation date: 2024-06-27T18:02:32.422871
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_104T06_9000002878_19407cztM0_level2.evt modeM0/AS1A05_104T06_9000002878_19407cztM0_level2_quad_clean.evt
Size (bytes)608,319,36063,264,960
Size580.1 MB 60.3 MB
Events in quadrant A3,384,438392,196
Events in quadrant B3,449,979393,954
Events in quadrant C3,382,743374,727
Events in quadrant D7,757,523293,027

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141392
B0142282
C0139652
D0274922

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6612500.756201%
B6612450.680581%
C6612701.058681%
D6612191228.917120%

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 7732 6613 16 16 0.21% 0.24%
B 7732 6613 1 1 0.01% 0.02%
C 7732 6612 6 6 0.08% 0.09%
D 7732 6612 1695 1695 21.92% 25.64%

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 5 16 131763 774.85 840 824 169.0
A 13 254 10403 56.69 840 824 169.0
A 12 96 9519 51.45 840 824 169.0
B 7 220 59409 369.68 839 819 158.5
B 0 197 30725 188.69 839 819 158.5
B 0 230 26819 164.05 839 819 158.5
C 14 238 124951 665.24 800 806 186.6
C 3 233 91486 485.92 800 806 186.6
C 0 207 39400 206.81 800 806 186.6
D 10 66 4785399 27803.86 706 685 172.1
D 7 238 223175 1292.88 706 685 172.1
D 1 52 63473 364.86 706 685 172.1

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