ASTROSAT CZTI

Data Quality Report

Orbit 08548

Creation date: 2024-06-27T15:34:08.010443
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/AS1G07_060T01_9000001200_08548cztM0_level2.evt modeM0/AS1G07_060T01_9000001200_08548cztM0_level2_quad_clean.evt
Size (bytes)1,257,770,880234,889,920
Size1.2 GB 224.0 MB
Events in quadrant A9,540,4841,458,060
Events in quadrant B9,591,5661,471,553
Events in quadrant C8,368,1681,461,459
Events in quadrant D9,309,1081,417,750

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03880
B03880
C03880
D03880

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04169722
B04128712
C03861012
D04137415

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A189395602.956862%
B189434762.512802%
C189431951.029404%
D189444042.132601%

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 21147 18949 219 219 1.04% 1.16%
B 21147 18949 166 166 0.78% 0.88%
C 21147 18950 0 0 0.00% 0.00%
D 21147 18947 130 130 0.61% 0.69%

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 15 223 593941 1342.69 2184 2135 440.8
A 15 174 256737 577.64 2184 2135 440.8
A 15 239 225635 507.08 2184 2135 440.8
B 10 16 747768 1773.49 2193 2134 420.4
B 0 214 111502 260.13 2193 2134 420.4
B 4 48 78630 181.95 2193 2134 420.4
C 13 61 16085 27.98 2140 2143 498.2
C 9 54 10070 15.91 2140 2143 498.2
C 8 222 7206 10.16 2140 2143 498.2
D 1 52 420634 816.0 2118 2068 512.9
D 4 95 337898 654.7 2118 2068 512.9
D 14 34 109142 208.74 2118 2068 512.9

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