ASTROSAT CZTI

Data Quality Report

Orbit 31051

Creation date: 2024-06-27T20:22:45.954655
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/AS1A10_071T63_9000004486_31051cztM0_level2.evt modeM0/AS1A10_071T63_9000004486_31051cztM0_level2_quad_clean.evt
Size (bytes)150,048,00026,493,120
Size143.1 MB 25.3 MB
Events in quadrant A635,586192,335
Events in quadrant B1,023,400194,465
Events in quadrant C746,943179,669
Events in quadrant D2,051,863141,960

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A113970879582493646
B1-1-1
C1-1-1
D1-1-1

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A025851
B037941
C029111
D069851

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A123440.324149%
B123490.729335%
C1234504.051864%
D123448038.897893%

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 1233 1233 0 0 0.00% 0.00%
B 1233 1233 1 1 0.08% 0.08%
C 1234 1234 22 22 1.78% 1.78%
D 1234 1234 502 502 40.68% 40.68%

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 13 254 2507 67.71 164 161 34.6
A 3 137 1495 38.5 164 161 34.6
A 0 226 1361 34.63 164 161 34.6
B 6 159 352466 10735.22 165 161 32.8
B 0 183 8532 255.08 165 161 32.8
B 0 190 4527 133.04 165 161 32.8
C 0 10 100904 2684.75 154 155 37.5
C 14 238 24657 652.93 154 155 37.5
C 4 175 7978 208.47 154 155 37.5
D 12 218 876041 25997.52 131 127 33.7
D 13 174 409529 12151.23 131 127 33.7
D 8 195 158275 4693.9 131 127 33.7

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