ASTROSAT CZTI

Data Quality Report

Orbit 01030

Creation date: 2024-06-27T14:06:24.842637
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/AS1P01_998T02_9000000190_01030cztM0_level2.evt modeM0/AS1P01_998T02_9000000190_01030cztM0_level2_quad_clean.evt
Size (bytes)1,115,052,480109,440,000
Size1.0 GB 104.4 MB
Events in quadrant A7,572,455737,386
Events in quadrant B7,685,983737,458
Events in quadrant C11,230,760676,908
Events in quadrant D6,855,119714,309

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270761
B0274321
C0379803
D0249551

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6425520.809339%
B642580.124514%
C642478712.250934%
D642480.124533%

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 7230 6426 244 244 3.37% 3.80%
B 7230 6426 194 194 2.68% 3.02%
C 7229 6425 1972 1972 27.28% 30.69%
D 7229 6425 133 133 1.84% 2.07%

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 4 32 181395 389.9 1922 1933 460.3
A 12 189 8435 14.13 1922 1933 460.3
A 11 79 7856 12.87 1922 1933 460.3
B 5 249 28957 58.1 1981 1988 464.2
B 8 234 28209 56.49 1981 1988 464.2
B 15 22 26615 53.06 1981 1988 464.2
C 8 208 3752781 7540.4 1793 1860 497.4
C 15 241 311666 622.8 1793 1860 497.4
C 12 254 81232 159.56 1793 1860 497.4
D 9 64 60567 107.59 1790 1856 545.7
D 1 83 48101 84.74 1790 1856 545.7
D 9 49 11163 17.06 1790 1856 545.7

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