ASTROSAT CZTI

Data Quality Report

Orbit 34001

Creation date: 2024-06-27T20:55:13.546536
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/AS1A11_106T03_9000004864_34001cztM0_level2.evt modeM0/AS1A11_106T03_9000004864_34001cztM0_level2_quad_clean.evt
Size (bytes)815,932,800120,674,880
Size778.1 MB 115.1 MB
Events in quadrant A4,474,903778,148
Events in quadrant B5,110,750788,552
Events in quadrant C6,235,237745,175
Events in quadrant D8,279,808715,770

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0186713
B0207082
C0242812
D0308572

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01840
B01840
C01840
D01840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9037180.199181%
B9037650.719265%
C90372893.197964%
D90376907.635277%

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 12859 9039 12 12 0.09% 0.13%
B 12859 9039 34 34 0.26% 0.38%
C 12859 9039 257 257 2.00% 2.84%
D 12859 9039 583 583 4.53% 6.45%

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 15 169 126547 575.6 1115 1094 218.0
A 13 6 26697 117.47 1115 1094 218.0
A 10 83 19268 83.38 1115 1094 218.0
B 5 172 247032 1204.13 1101 1075 204.3
B 0 190 94960 459.63 1101 1075 204.3
B 3 112 93763 453.77 1101 1075 204.3
C 4 254 751916 3160.8 1048 1057 237.6
C 3 233 455637 1913.59 1048 1057 237.6
C 15 214 386246 1621.48 1048 1057 237.6
D 8 195 2033042 7310.3 1027 1008 278.0
D 8 230 522760 1877.02 1027 1008 278.0
D 13 249 500859 1798.23 1027 1008 278.0

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