ASTROSAT CZTI

Data Quality Report

Orbit 36365

Creation date: 2024-06-27T21:25:47.464028
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/AS1A11_097T17_9000005194_36365cztM0_level2.evt modeM0/AS1A11_097T17_9000005194_36365cztM0_level2_quad_clean.evt
Size (bytes)103,345,92024,989,760
Size98.6 MB 23.8 MB
Events in quadrant A639,307166,599
Events in quadrant B631,713167,584
Events in quadrant C793,315168,042
Events in quadrant D975,875158,193

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A027481
B027141
C031561
D037561

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A127540.313725%
B127520.156863%
C1275282.196078%
D1275574.470588%

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 1275 1275 3 3 0.24% 0.24%
B 1275 1275 1 1 0.08% 0.08%
C 1275 1275 21 21 1.65% 1.65%
D 1274 1274 64 64 5.02% 5.02%

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 69479 2337.35 140 138 29.7
A 9 143 15620 521.87 140 138 29.7
A 12 189 4781 156.51 140 138 29.7
B 5 172 24248 833.24 141 137 28.9
B 5 236 15300 524.01 141 137 28.9
B 15 85 12992 444.25 141 137 28.9
C 0 207 99259 2856.35 140 142 34.7
C 0 10 89085 2563.15 140 142 34.7
C 15 214 58516 1682.22 140 142 34.7
D 12 6 248650 7063.63 137 133 35.2
D 2 153 109844 3118.33 137 133 35.2
D 13 171 37858 1072.26 137 133 35.2

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