ASTROSAT CZTI

Data Quality Report

Orbit 45487

Creation date: 2024-06-27T23:12:42.446815
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/AS1A13_042T03_9000006094_45487cztM0_level2.fits modeM0/AS1A13_042T03_9000006094_45487cztM0_level2_quad_clean.evt
Size (bytes)943,349,760228,585,600
Size899.6 MB 218.0 MB
Events in quadrant A11,378,6411,506,693
Events in quadrant B6,964,6151,562,179
Events in quadrant C6,767,1931,494,694
Events in quadrant D8,693,6211,362,060

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02880
B02880
C02880
D02880

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0441150
B0307121
C0309880
D0364040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A144192051.421735%
B144181851.283118%
C144191711.185935%
D144191611.116582%

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 14419 14419 5 5 0.03% 0.03%
B 14418 14418 11 11 0.08% 0.08%
C 14419 14419 130 130 0.90% 0.90%
D 14419 14419 92 92 0.64% 0.64%

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 5096874 14935.88 1619 1580 341.1
A 13 248 31660 88.17 1619 1580 341.1
A 3 137 19693 53.09 1619 1580 341.1
B 3 112 199757 617.49 1619 1571 321.0
B 5 172 71540 218.0 1619 1571 321.0
B 0 183 64412 195.79 1619 1571 321.0
C 3 233 348883 931.86 1581 1587 372.7
C 14 254 129549 343.35 1581 1587 372.7
C 12 2 89020 234.6 1581 1587 372.7
D 11 241 1596407 3971.62 1580 1526 401.6
D 1 52 396034 982.41 1580 1526 401.6
D 13 249 314077 778.32 1580 1526 401.6

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