ASTROSAT CZTI

Data Quality Report

Orbit 40845

Creation date: 2024-06-27T22:21:14.788493
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/AS1A12_104T02_9000005572_40845cztM0_level2.fits modeM0/AS1A12_104T02_9000005572_40845cztM0_level2_quad_clean.evt
Size (bytes)739,054,080173,027,520
Size704.8 MB 165.0 MB
Events in quadrant A6,349,4121,151,593
Events in quadrant B4,936,0341,196,295
Events in quadrant C5,390,4861,138,432
Events in quadrant D9,839,8491,000,117

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0254924
B0222283
C0230143
D0367613

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02220
B02220
C02220
D02220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A108651751.610676%
B10865190.174873%
C10865550.506213%
D108657697.077773%

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 14952 10868 114 114 0.76% 1.05%
B 14952 10868 5 5 0.03% 0.05%
C 14952 10868 38 38 0.25% 0.35%
D 14952 10868 824 824 5.51% 7.58%

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 908202 3717.87 1191 1165 244.0
A 13 248 698176 2856.99 1191 1165 244.0
A 2 79 72399 291.98 1191 1165 244.0
B 0 190 192386 825.82 1186 1151 231.6
B 5 255 55743 235.75 1186 1151 231.6
B 12 111 29632 122.99 1186 1151 231.6
C 15 214 455346 1670.55 1166 1173 271.9
C 10 70 187979 687.11 1166 1173 271.9
C 0 10 128835 469.57 1166 1173 271.9
D 12 79 4085781 14642.56 1144 1113 279.0
D 13 249 528768 1891.52 1144 1113 279.0
D 2 249 512430 1832.95 1144 1113 279.0

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