ASTROSAT CZTI

Data Quality Report

Orbit 49831

Creation date: 2024-12-16T14:11:28.339239
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_037T01_9000006440_49831cztM0_level2.fits modeM0/AS1A13_037T01_9000006440_49831cztM0_level2_quad_clean.evt
Size (bytes)1,320,289,92048,850,560
Size1.2 GB 46.6 MB
Events in quadrant A18,637,440142,849
Events in quadrant B3,766,008728,498
Events in quadrant C10,032,5365,439
Events in quadrant D15,881,83293,290

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0602350
B0161400
C0348300
D0521030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7160708999.008380%
B7160751.047486%
C71617161100.000000%
D71617161100.000000%

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 7159 7159 6408 6408 89.51% 89.51%
B 7160 7160 46 46 0.64% 0.64%
C 7160 7159 386 386 5.39% 5.39%
D 7160 7160 5082 5082 70.98% 70.98%

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 98 6345575 114398.99 177 170 55.5
A 3 84 4679722 84365.94 177 170 55.5
A 4 4 3318665 59827.94 177 170 55.5
B 4 206 260661 1601.55 761 737 162.3
B 0 229 123264 754.96 761 737 162.3
B 9 218 90120 550.74 761 737 162.3
C 15 147 4616827 198914.77 30 27 23.2
C 15 197 984174 42401.96 30 27 23.2
C 15 230 736596 31735.07 30 27 23.2
D 7 61 3779623 46221.63 138 127 81.8
D 7 126 2500741 30581.45 138 127 81.8
D 7 159 1566710 19158.64 138 127 81.8

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