ASTROSAT CZTI

Data Quality Report

Orbit 00409

Creation date: 2024-06-27T13:59:27.321963
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/AS1P01_161T03_9000000070_00409cztM0_level2.evt modeM0/AS1P01_161T03_9000000070_00409cztM0_level2_quad_clean.evt
Size (bytes)757,854,72046,209,600
Size722.7 MB 44.1 MB
Events in quadrant A5,810,795269,054
Events in quadrant B5,829,328254,928
Events in quadrant C5,394,011266,122
Events in quadrant D5,579,157252,765

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0208762
B0209271
C0196231
D0201781

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A507420.039417%
B507410.019708%
C507420.039417%
D5074120.236500%

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 7139 5075 109 109 1.53% 2.15%
B 7139 5075 47 47 0.66% 0.93%
C 7139 5075 29 29 0.41% 0.57%
D 7139 5075 74 74 1.04% 1.46%

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 0 238 54336 162.99 1452 1433 324.6
A 13 17 28283 82.72 1452 1433 324.6
A 13 160 27975 81.77 1452 1433 324.6
B 0 23 84707 243.01 1467 1472 342.5
B 0 220 44419 125.39 1467 1472 342.5
B 4 82 21234 57.7 1467 1472 342.5
C 1 1 28424 71.45 1353 1402 378.2
C 9 206 18283 44.63 1353 1402 378.2
C 2 53 12284 28.77 1353 1402 378.2
D 13 221 225348 557.01 1286 1335 402.2
D 13 7 136902 337.09 1286 1335 402.2
D 1 5 63269 154.0 1286 1335 402.2

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