ASTROSAT CZTI

Data Quality Report

Orbit 17643

Creation date: 2024-06-27T17:39:01.302983
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_118T02_9000002612_17643cztM0_level2.evt modeM0/AS1A05_118T02_9000002612_17643cztM0_level2_quad_clean.evt
Size (bytes)575,055,36097,139,520
Size548.4 MB 92.6 MB
Events in quadrant A3,211,293641,853
Events in quadrant B3,338,562658,530
Events in quadrant C3,391,935619,977
Events in quadrant D7,030,018564,447

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135392
B0139072
C0138622
D0254582

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6556270.411836%
B6556470.716901%
C6556500.762660%
D655682012.507627%

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 7841 6558 0 0 0.00% 0.00%
B 7841 6558 1 1 0.01% 0.02%
C 7841 6558 0 0 0.00% 0.00%
D 7841 6558 712 712 9.08% 10.86%

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 0 226 7333 38.87 836 821 167.5
A 12 194 5951 30.62 836 821 167.5
A 3 137 5930 30.5 836 821 167.5
B 0 230 55709 350.3 834 816 156.7
B 12 111 18369 112.02 834 816 156.7
B 11 111 15963 96.66 834 816 156.7
C 3 233 148629 802.39 794 801 184.2
C 14 238 126091 680.06 794 801 184.2
C 5 218 20478 106.8 794 801 184.2
D 1 52 4049750 21883.33 761 739 185.0
D 13 189 72752 389.2 761 739 185.0
D 2 234 21565 112.56 761 739 185.0

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