ASTROSAT CZTI

Data Quality Report

Orbit 40267

Creation date: 2024-06-27T22:14:21.722186
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/AS1A12_056T02_9000005538_40267cztM0_level2.fits modeM0/AS1A12_056T02_9000005538_40267cztM0_level2_quad_clean.evt
Size (bytes)1,296,060,480291,646,080
Size1.2 GB 278.1 MB
Events in quadrant A10,580,7781,971,119
Events in quadrant B9,196,6642,041,009
Events in quadrant C9,679,3001,987,916
Events in quadrant D17,094,6941,561,667

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0424235
B0395784
C0401034
D0637054

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0530
B0530
C0530
D0540

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03720
B03720
C03720
D03720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A184112401.303569%
B184111440.782141%
C184111350.733257%
D18411273614.860681%

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 22440 18414 151 151 0.67% 0.82%
B 22440 18414 67 67 0.30% 0.36%
C 22440 18414 111 111 0.49% 0.60%
D 22440 18413 2263 2263 10.08% 12.29%

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 1404418 3373.92 2043 2000 415.7
A 13 248 882863 2119.17 2043 2000 415.7
A 6 10 94189 221.79 2043 2000 415.7
B 4 171 431866 1095.45 2036 1974 392.4
B 5 255 318691 807.06 2036 1974 392.4
B 0 245 276169 698.71 2036 1974 392.4
C 14 254 1056396 2258.98 2005 2020 466.7
C 15 214 773191 1652.22 2005 2020 466.7
C 15 208 15153 28.14 2005 2020 466.7
D 12 0 5088716 11132.76 1865 1809 456.9
D 12 227 3255844 7121.5 1865 1809 456.9
D 1 47 789175 1723.16 1865 1809 456.9

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