ASTROSAT CZTI

Data Quality Report

Orbit 27152

Creation date: 2024-06-27T19:37:02.295561
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/AS1T03_245T01_9000003916_27152cztM0_level2.evt modeM0/AS1T03_245T01_9000003916_27152cztM0_level2_quad_clean.evt
Size (bytes)189,622,08031,654,080
Size180.8 MB 30.2 MB
Events in quadrant A1,171,743206,295
Events in quadrant B1,294,003204,865
Events in quadrant C1,129,653194,177
Events in quadrant D1,988,095186,077

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A049660
B052970
C047970
D074660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A229230.130890%
B229970.304480%
C230690.390286%
D22811617.058308%

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 6163 2347 2 2 0.03% 0.09%
B 6149 2350 0 0 0.00% 0.00%
C 6167 2356 2 2 0.03% 0.08%
D 6116 2339 146 146 2.39% 6.24%

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 13 248 16017 261.41 294 288 60.2
A 0 13 8502 136.51 294 288 60.2
A 7 192 8169 130.98 294 288 60.2
B 15 33 73081 1301.56 291 285 55.9
B 3 112 24656 435.74 291 285 55.9
B 0 229 17406 306.12 291 285 55.9
C 14 238 44699 670.55 276 277 66.2
C 15 208 8020 116.88 276 277 66.2
C 13 61 1927 24.91 276 277 66.2
D 1 52 714597 10825.61 272 265 66.0
D 11 176 83017 1254.1 272 265 66.0
D 7 38 50042 754.36 272 265 66.0

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