ASTROSAT CZTI

Data Quality Report

Orbit 12857

Creation date: 2024-06-27T16:33:13.530268
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_048T01_9000001890_12857cztM0_level2.evt modeM0/AS1A04_048T01_9000001890_12857cztM0_level2_quad_clean.evt
Size (bytes)631,451,52094,026,240
Size602.2 MB 89.7 MB
Events in quadrant A4,267,332578,803
Events in quadrant B6,502,929564,142
Events in quadrant C3,831,033578,899
Events in quadrant D3,967,756557,232

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0178523
B0247662
C0169722
D0174652

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81801852.261614%
B8180113413.863081%
C8180710.867971%
D8180780.953545%

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 8961 8183 5 5 0.06% 0.06%
B 8961 8183 551 551 6.15% 6.73%
C 8961 8183 0 0 0.00% 0.00%
D 8961 8183 25 25 0.28% 0.31%

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 260652 1256.24 1011 988 206.7
A 1 162 40584 191.56 1011 988 206.7
A 8 15 30579 143.16 1011 988 206.7
B 4 239 2090976 11527.16 941 917 181.3
B 0 85 344371 1894.23 941 917 181.3
B 3 64 126966 695.19 941 917 181.3
C 13 61 7211 27.49 982 985 226.5
C 14 234 2981 8.81 982 985 226.5
C 3 202 2354 6.04 982 985 226.5
D 1 52 102208 429.75 980 953 235.6
D 4 95 84799 355.86 980 953 235.6
D 13 104 57482 239.92 980 953 235.6

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