ASTROSAT CZTI

Data Quality Report

Orbit 11298

Creation date: 2024-06-27T16:10:55.752426
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/AS1A04_144T01_9000001652_11298cztM0_level2.evt modeM0/AS1A04_144T01_9000001652_11298cztM0_level2_quad_clean.evt
Size (bytes)1,721,805,120212,811,840
Size1.6 GB 203.0 MB
Events in quadrant A11,879,0621,314,610
Events in quadrant B12,479,8741,344,587
Events in quadrant C8,508,0571,322,386
Events in quadrant D18,009,8401,166,148

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03820
B03820
C03820
D03820

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0472895
B0493084
C0384714
D0662154

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1881111496.108128%
B1881114047.463718%
C188112701.435330%
D18811289615.395247%

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 20946 18816 515 515 2.46% 2.74%
B 20946 18816 633 633 3.02% 3.36%
C 20946 18816 3 3 0.01% 0.02%
D 20946 18816 1931 1931 9.22% 10.26%

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 8 5 2858332 6338.41 2206 2157 450.6
A 1 162 131753 287.6 2206 2157 450.6
A 1 178 82292 177.84 2206 2157 450.6
B 4 239 3488055 8173.88 2213 2158 426.5
B 3 189 141191 326.01 2213 2158 426.5
B 15 204 98325 225.5 2213 2158 426.5
C 14 234 26476 47.88 2176 2186 507.3
C 13 61 16199 27.62 2176 2186 507.3
C 3 202 5385 6.31 2176 2186 507.3
D 13 152 4466886 9175.41 2028 1965 486.6
D 1 52 2130803 4374.76 2028 1965 486.6
D 10 253 1865195 3828.93 2028 1965 486.6

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