ASTROSAT CZTI

Data Quality Report

Orbit 07000

Creation date: 2024-06-27T15:14:17.278882
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/AS1T01_151T01_9000000960_07000cztM0_level2.evt modeM0/AS1T01_151T01_9000000960_07000cztM0_level2_quad_clean.evt
Size (bytes)1,046,494,080185,711,040
Size998.0 MB 177.1 MB
Events in quadrant A7,403,5601,135,082
Events in quadrant B7,871,7581,143,168
Events in quadrant C7,277,6511,120,924
Events in quadrant D8,016,5241,080,969

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03340
B03340
C03340
D03340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0337114
B0349753
C0335393
D0353193

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16605750.451671%
B16605940.566095%
C16605400.240891%
D166051450.873231%

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 18960 16608 2 2 0.01% 0.01%
B 18960 16608 5 5 0.03% 0.03%
C 18960 16608 0 0 0.00% 0.00%
D 18960 16608 94 94 0.50% 0.57%

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 15 234 36164 88.08 1912 1867 389.4
A 0 226 18016 41.47 1912 1867 389.4
A 12 194 17297 39.63 1912 1867 389.4
B 0 214 187957 507.9 1927 1878 366.4
B 4 173 50173 131.82 1927 1878 366.4
B 0 228 47111 123.46 1927 1878 366.4
C 13 61 14747 29.94 1862 1872 430.0
C 1 16 8805 16.12 1862 1872 430.0
C 10 22 5352 8.09 1862 1872 430.0
D 8 195 490865 1081.82 1853 1796 452.1
D 13 105 238536 523.67 1853 1796 452.1
D 2 14 110524 240.51 1853 1796 452.1

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