ASTROSAT CZTI

Data Quality Report

Orbit 10492

Creation date: 2024-06-27T16:00:05.100045
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/AS1G07_027T01_9000001516_10492cztM0_level2.evt modeM0/AS1G07_027T01_9000001516_10492cztM0_level2_quad_clean.evt
Size (bytes)170,000,64038,168,640
Size162.1 MB 36.4 MB
Events in quadrant A1,192,320252,930
Events in quadrant B1,233,926252,001
Events in quadrant C883,793253,792
Events in quadrant D1,688,799239,591

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0440
B0440
C0440
D0440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050032
B052252
C043490
D065033

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A216870.322878%
B2168713.274908%
C216910.046104%
D2168401.845018%

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 2169 2169 7 7 0.32% 0.32%
B 2169 2169 71 71 3.27% 3.27%
C 2169 2169 1 1 0.05% 0.05%
D 2169 2169 42 42 1.94% 1.94%

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 15 239 189550 3901.18 227 222 48.5
A 5 16 44783 918.2 227 222 48.5
A 3 80 43458 890.89 227 222 48.5
B 4 239 280086 6222.44 226 221 45.0
B 10 245 55028 1218.56 226 221 45.0
B 0 197 7653 165.24 226 221 45.0
C 14 234 4313 76.08 225 227 53.7
C 13 61 1693 27.3 225 227 53.7
C 14 238 889 12.33 225 227 53.7
D 1 52 260834 4676.72 223 216 55.7
D 1 20 253285 4541.25 223 216 55.7
D 8 195 252741 4531.49 223 216 55.7

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