ASTROSAT CZTI

Data Quality Report

Orbit 17898

Creation date: 2024-06-27T17:42:21.488611
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/AS1A05_109T01_9000002662_17898cztM0_level2.evt modeM0/AS1A05_109T01_9000002662_17898cztM0_level2_quad_clean.evt
Size (bytes)476,804,16080,400,960
Size454.7 MB 76.7 MB
Events in quadrant A3,380,857488,698
Events in quadrant B3,558,846498,273
Events in quadrant C3,516,465478,550
Events in quadrant D3,496,599469,690

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147053
B0150022
C0147722
D0151342

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7177660.919604%
B7177710.989271%
C71771021.421207%
D7177751.045005%

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 7842 7177 0 0 0.00% 0.00%
B 7842 7178 1 1 0.01% 0.01%
C 7842 7177 2 2 0.03% 0.03%
D 7842 7178 13 13 0.17% 0.18%

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 15 174 39534 216.76 869 848 178.5
A 0 226 7405 36.74 869 848 178.5
A 3 137 6835 33.55 869 848 178.5
B 15 222 43384 251.5 869 843 169.2
B 4 216 36805 212.6 869 843 169.2
B 0 189 34791 200.7 869 843 169.2
C 14 238 128265 646.7 834 838 197.0
C 3 233 101880 512.8 834 838 197.0
C 9 54 28493 140.35 834 838 197.0
D 1 52 68132 323.52 848 822 208.1
D 10 70 50755 240.0 848 822 208.1
D 7 238 36414 171.07 848 822 208.1

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