ASTROSAT CZTI

Data Quality Report

Orbit 41295

Creation date: 2024-06-27T22:27:08.673735
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/AS1T05_106T01_9000005642_41295cztM0_level2.fits modeM0/AS1T05_106T01_9000005642_41295cztM0_level2_quad_clean.evt
Size (bytes)966,294,720195,984,000
Size921.5 MB 186.9 MB
Events in quadrant A6,658,4811,387,306
Events in quadrant B5,914,8181,436,376
Events in quadrant C6,691,3501,320,133
Events in quadrant D15,510,168903,028

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0276354
B0262313
C0281393
D0549613

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02640
B02640
C02640
D02640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0430
B0430
C0430
D0430

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12827230.179309%
B12827270.210493%
C128273112.424573%
D12827354027.598035%

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 17153 12830 17 17 0.10% 0.13%
B 17153 12830 11 11 0.06% 0.09%
C 17153 12830 305 305 1.78% 2.38%
D 17153 12828 3362 3362 19.60% 26.21%

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 1044028 3677.83 1393 1366 283.5
A 12 189 172689 604.31 1393 1366 283.5
A 6 10 50622 173.74 1393 1366 283.5
B 7 202 228525 846.03 1392 1348 268.5
B 0 245 84070 308.07 1392 1348 268.5
B 0 229 53238 193.24 1392 1348 268.5
C 0 10 884496 2825.38 1349 1356 312.6
C 15 214 532180 1698.23 1349 1356 312.6
C 13 61 8929 24.23 1349 1356 312.6
D 1 47 4393935 15369.27 1170 1135 285.8
D 2 249 2900762 10145.05 1170 1135 285.8
D 1 52 1572648 5498.32 1170 1135 285.8

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