ASTROSAT CZTI

Data Quality Report

Orbit 20998

Creation date: 2024-06-27T18:22:11.235235
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_072T04_9000003094_20998cztM0_level2.evt modeM0/AS1A05_072T04_9000003094_20998cztM0_level2_quad_clean.evt
Size (bytes)437,469,12095,929,920
Size417.2 MB 91.5 MB
Events in quadrant A3,060,157626,162
Events in quadrant B3,398,582628,762
Events in quadrant C3,217,492602,328
Events in quadrant D3,125,504589,682

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134633
B0143822
C0138032
D0138172

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6563210.319976%
B6564871.325411%
C6564580.883608%
D6564310.472273%

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 7613 6564 0 0 0.00% 0.00%
B 7614 6565 25 25 0.33% 0.38%
C 7614 6565 3 3 0.04% 0.05%
D 7614 6565 10 10 0.13% 0.15%

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 6975 38.64 796 778 160.4
A 3 137 6341 34.69 796 778 160.4
A 12 194 5709 30.75 796 778 160.4
B 7 220 74301 487.91 794 772 150.7
B 3 64 72818 478.07 794 772 150.7
B 0 189 36769 238.86 794 772 150.7
C 14 238 120948 660.11 771 777 182.0
C 9 54 79266 431.14 771 777 182.0
C 13 61 5333 25.03 771 777 182.0
D 7 238 43538 227.08 776 754 188.4
D 12 235 30109 155.81 776 754 188.4
D 2 234 28720 148.44 776 754 188.4

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