ASTROSAT CZTI

Data Quality Report

Orbit 44924

Creation date: 2024-06-27T23:08:02.824288
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_017T02_9000006032_44924cztM0_level2.fits modeM0/AS1A13_017T02_9000006032_44924cztM0_level2_quad_clean.evt
Size (bytes)531,622,080117,498,240
Size507.0 MB 112.1 MB
Events in quadrant A5,816,152796,926
Events in quadrant B3,957,806824,115
Events in quadrant C3,327,762801,113
Events in quadrant D6,067,326676,966

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0214563
B0160571
C0139621
D0226771

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65782123.222864%
B65791882.857577%
C6579751.139991%
D657965910.016720%

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 7773 6579 11 11 0.14% 0.17%
B 7774 6580 40 40 0.51% 0.61%
C 7774 6580 4 4 0.05% 0.06%
D 7774 6580 445 445 5.72% 6.76%

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 2527058 14805.56 819 803 170.6
A 13 248 58398 337.55 819 803 170.6
A 0 247 43510 250.29 819 803 170.6
B 4 171 144383 895.4 816 793 160.4
B 0 183 144292 894.83 816 793 160.4
B 0 168 80943 499.8 816 793 160.4
C 15 208 58258 301.21 815 822 190.7
C 12 2 43589 224.28 815 822 190.7
C 14 254 30025 153.15 815 822 190.7
D 1 52 843074 4297.38 787 763 196.0
D 2 249 797146 4063.06 787 763 196.0
D 13 249 627961 3199.89 787 763 196.0

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