ASTROSAT CZTI

Data Quality Report

Orbit 14791

Creation date: 2024-06-27T16:59:43.328171
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/AS1A04_022T02_9000002184_14791cztM0_level2.evt modeM0/AS1A04_022T02_9000002184_14791cztM0_level2_quad_clean.evt
Size (bytes)1,203,854,400211,921,920
Size1.1 GB 202.1 MB
Events in quadrant A7,766,1111,363,712
Events in quadrant B10,766,1471,340,580
Events in quadrant C9,262,3821,329,154
Events in quadrant D7,605,9591,303,884

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0328024
B0422813
C0381373
D0331533

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0350

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03180
B03180
C03180
D03180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A156761611.027048%
B156767855.007655%
C156761290.822914%
D156761721.097219%

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 19147 15680 3 3 0.02% 0.02%
B 19147 15680 387 387 2.02% 2.47%
C 19147 15680 4 4 0.02% 0.03%
D 19147 15680 76 76 0.40% 0.48%

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 12 189 168708 428.85 1951 1917 388.9
A 13 248 40176 98.37 1951 1917 388.9
A 9 143 27744 66.41 1951 1917 388.9
B 10 16 2044292 5744.15 1900 1853 355.6
B 3 64 948031 2661.03 1900 1853 355.6
B 0 229 89257 245.81 1900 1853 355.6
C 3 233 1990941 4719.79 1851 1860 421.4
C 14 234 40760 92.3 1851 1860 421.4
C 13 61 13464 27.53 1851 1860 421.4
D 15 0 268817 541.74 1859 1815 492.9
D 12 4 64564 127.32 1859 1815 492.9
D 2 234 60446 118.96 1859 1815 492.9

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