ASTROSAT CZTI

Data Quality Report

Orbit 41182

Creation date: 2024-06-27T22:25:20.460970
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_101T01_9000005612_41182cztM0_level2.fits modeM0/AS1A12_101T01_9000005612_41182cztM0_level2_quad_clean.evt
Size (bytes)437,163,84079,032,960
Size416.9 MB 75.4 MB
Events in quadrant A2,766,981580,071
Events in quadrant B2,369,044595,975
Events in quadrant C8,402,622319,209
Events in quadrant D2,233,481529,307

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113943
B0108592
C0285222
D0108192

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A526060.114068%
B5260150.285171%
C5260252948.079848%
D5260180.342205%

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 7083 5261 2 2 0.03% 0.04%
B 7083 5261 11 11 0.16% 0.21%
C 7083 5260 2097 2097 29.61% 39.87%
D 7083 5261 17 17 0.24% 0.32%

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 503372 4338.4 564 553 115.9
A 12 189 37014 314.59 564 553 115.9
A 2 79 30176 255.59 564 553 115.9
B 0 190 94366 863.96 558 543 108.6
B 5 255 31425 284.37 558 543 108.6
B 0 229 30624 277.0 558 543 108.6
C 9 54 6230280 61496.64 434 436 101.3
C 0 10 272967 2690.23 434 436 101.3
C 15 214 186537 1837.06 434 436 101.3
D 9 19 70243 529.06 545 531 131.8
D 2 249 30897 230.45 545 531 131.8
D 2 234 22836 169.28 545 531 131.8

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