ASTROSAT CZTI

Data Quality Report

Orbit 46805

Creation date: 2024-06-27T23:27:51.499421
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_068T13_9000006268_46805cztM0_level2.fits modeM0/AS1A13_068T13_9000006268_46805cztM0_level2_quad_clean.evt
Size (bytes)234,446,40053,184,960
Size223.6 MB 50.7 MB
Events in quadrant A3,165,077354,814
Events in quadrant B1,782,327357,371
Events in quadrant C1,505,240341,983
Events in quadrant D1,962,424317,025

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118110
B076390
C071260
D081900

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0680
B0680
C0680
D0680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3370260.771513%
B3371481.423910%
C3371240.711955%
D3371351.038268%

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 3370 3370 20 20 0.59% 0.59%
B 3371 3371 53 53 1.57% 1.57%
C 3371 3371 27 27 0.80% 0.80%
D 3371 3371 27 27 0.80% 0.80%

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 1687209 23188.36 344 336 72.7
A 13 248 62659 856.71 344 336 72.7
A 15 235 59911 818.94 344 336 72.7
B 5 255 96824 1410.24 342 332 68.4
B 3 112 91485 1332.21 342 332 68.4
B 15 36 81059 1179.83 342 332 68.4
C 0 207 129331 1583.44 342 344 81.5
C 14 254 22443 271.29 342 344 81.5
C 1 241 6753 78.68 342 344 81.5
D 1 52 379269 4305.76 342 332 88.0
D 13 249 129253 1464.9 342 332 88.0
D 13 138 48655 549.08 342 332 88.0

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