ASTROSAT CZTI

Data Quality Report

Orbit 09811

Creation date: 2024-06-27T15:50:55.415569
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/AS1G05_218T01_9000001394_09811cztM0_level2.evt modeM0/AS1G05_218T01_9000001394_09811cztM0_level2_quad_clean.evt
Size (bytes)370,010,88079,292,160
Size352.9 MB 75.6 MB
Events in quadrant A2,645,563502,344
Events in quadrant B2,701,180518,393
Events in quadrant C2,623,643511,857
Events in quadrant D2,855,028478,080

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01288
B012812
C012814
D012814

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129371471
B0131521531
C0129441364
D0141041773

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0194
B0191
C0193
D0183

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5562250.449479%
B5549450.810957%
C5616230.409544%
D5520530.960145%

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 7457 5964 0 0 0.00% 0.00%
B 7455 5968 0 0 0.00% 0.00%
C 7457 6004 0 0 0.00% 0.00%
D 7376 5924 17 17 0.23% 0.29%

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 1 162 22257 156.92 679 665 137.6
A 0 226 6103 39.52 679 665 137.6
A 12 194 5427 34.61 679 665 137.6
B 12 111 14521 106.26 683 667 130.4
B 11 111 12064 87.41 683 667 130.4
B 4 239 10429 74.87 683 667 130.4
C 13 61 5058 27.85 672 675 157.4
C 10 22 2998 14.76 672 675 157.4
C 3 202 1715 6.61 672 675 157.4
D 2 152 192586 1130.63 648 634 169.8
D 1 52 88529 517.72 648 634 169.8
D 12 233 50402 293.14 648 634 169.8

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