ASTROSAT CZTI

Data Quality Report

Orbit 40371

Creation date: 2024-06-27T22:15:21.288056
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_056T02_9000005538_40371cztM0_level2.fits modeM0/AS1A12_056T02_9000005538_40371cztM0_level2_quad_clean.evt
Size (bytes)1,941,177,600457,430,400
Size1.8 GB 436.2 MB
Events in quadrant A17,398,6903,095,863
Events in quadrant B15,082,6373,221,231
Events in quadrant C16,995,7233,069,576
Events in quadrant D20,221,2822,543,963

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0702091407
B0645441464
C0692601155
D0806271752

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0902
B0893
C0880
D0903

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A058312
B05839
C058413
D058114

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A279097152.561898%
B279041700.609232%
C279165161.848402%
D27875345912.408969%

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 37281 28114 523 523 1.40% 1.86%
B 37276 28093 98 98 0.26% 0.35%
C 37279 28125 521 521 1.40% 1.85%
D 37264 28084 1136 1136 3.05% 4.05%

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 13 248 2542070 4101.5 3071 3016 619.1
A 10 83 2161824 3487.27 3071 3016 619.1
A 6 10 440043 705.96 3071 3016 619.1
B 7 202 1865787 3170.27 3073 2993 587.6
B 5 255 496858 840.5 3073 2993 587.6
B 0 230 199402 334.27 3073 2993 587.6
C 14 254 3946433 5645.79 3016 3044 698.5
C 15 214 1175349 1678.4 3016 3044 698.5
C 0 10 58778 79.79 3016 3044 698.5
D 12 227 4507690 6441.06 2851 2777 699.4
D 2 250 1144942 1633.05 2851 2777 699.4
D 12 128 975181 1390.33 2851 2777 699.4

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