ASTROSAT CZTI

Data Quality Report

Orbit 47454

Creation date: 2024-07-07T15:32:30.257592
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/AS1A13_089T01_9000006330_47454cztM0_level2.fits modeM0/AS1A13_089T01_9000006330_47454cztM0_level2_quad_clean.evt
Size (bytes)829,025,280169,799,040
Size790.6 MB 161.9 MB
Events in quadrant A11,382,6281,114,107
Events in quadrant B5,780,1361,156,888
Events in quadrant C5,146,1521,139,909
Events in quadrant D7,514,384957,801

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02240
B02240
C02240
D02240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0423421
B0248431
C0233591
D0302081

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A111607056.317204%
B111616105.465460%
C111612612.338500%
D11161111910.025983%

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 11430 11161 52 52 0.45% 0.47%
B 11431 11162 67 67 0.59% 0.60%
C 11431 11162 1 1 0.01% 0.01%
D 11431 11161 738 738 6.46% 6.61%

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 5846928 22069.91 1260 1227 264.9
A 9 191 623220 2348.28 1260 1227 264.9
A 14 235 34567 125.87 1260 1227 264.9
B 5 32 510775 2003.17 1264 1221 254.4
B 0 198 134200 522.77 1264 1221 254.4
B 0 190 56496 217.3 1264 1221 254.4
C 3 233 125451 416.94 1260 1263 297.9
C 0 207 59657 196.05 1260 1263 297.9
C 12 250 17238 53.63 1260 1263 297.9
D 12 128 2328277 7816.16 1171 1129 297.7
D 2 249 370650 1241.11 1171 1129 297.7
D 15 127 91851 304.71 1171 1129 297.7

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