ASTROSAT CZTI

Data Quality Report

Orbit 24916

Creation date: 2024-06-27T19:11:24.685446
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/AS1A08_003T16_9000003650_24916cztM0_level2.evt modeM0/AS1A08_003T16_9000003650_24916cztM0_level2_quad_clean.evt
Size (bytes)542,831,04089,634,240
Size517.7 MB 85.5 MB
Events in quadrant A4,093,377550,540
Events in quadrant B4,048,312562,558
Events in quadrant C3,885,577530,042
Events in quadrant D3,876,509522,930

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171022
B0169793
C0164032
D0166522

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78793644.619876%
B78793364.264501%
C78793384.289885%
D78792473.134916%

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 8159 7880 33 33 0.40% 0.42%
B 8159 7880 13 13 0.16% 0.16%
C 8159 7880 0 0 0.00% 0.00%
D 8159 7880 13 13 0.16% 0.16%

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 15 223 197210 973.08 991 967 201.7
A 15 239 60737 296.37 991 967 201.7
A 13 254 11613 52.79 991 967 201.7
B 0 189 129847 673.89 982 956 191.3
B 4 80 45834 234.64 982 956 191.3
B 12 111 24494 123.07 982 956 191.3
C 14 238 152067 674.13 947 951 224.2
C 7 247 33446 144.96 947 951 224.2
C 13 61 6674 25.53 947 951 224.2
D 7 238 74215 311.17 964 934 235.5
D 8 195 66549 278.62 964 934 235.5
D 1 239 52968 220.95 964 934 235.5

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