ASTROSAT CZTI

Data Quality Report

Orbit 17647

Creation date: 2024-06-27T17:39:04.718050
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_118T02_9000002612_17647cztM0_level2.evt modeM0/AS1A05_118T02_9000002612_17647cztM0_level2_quad_clean.evt
Size (bytes)504,328,32084,306,240
Size481.0 MB 80.4 MB
Events in quadrant A3,298,030528,965
Events in quadrant B3,449,484535,614
Events in quadrant C3,435,787512,809
Events in quadrant D4,620,574493,664

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141942
B0145552
C0142402
D0181092

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69091141.650022%
B69101201.736614%
C69101402.026049%
D69103545.123010%

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 7619 6909 0 0 0.00% 0.00%
B 7620 6910 3 3 0.04% 0.04%
C 7620 6910 0 0 0.00% 0.00%
D 7620 6910 220 220 2.89% 3.18%

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 14 237 16527 90.71 854 833 173.0
A 0 226 7578 38.99 854 833 173.0
A 3 137 6250 31.31 854 833 173.0
B 0 230 73870 445.63 845 822 163.9
B 12 111 19657 114.9 845 822 163.9
B 7 220 17834 103.78 845 822 163.9
C 3 233 139691 732.52 813 816 189.6
C 14 238 125063 655.36 813 816 189.6
C 13 61 5709 25.81 813 816 189.6
D 1 52 1128717 5666.83 817 794 199.0
D 13 189 281780 1411.71 817 794 199.0
D 10 70 47668 235.5 817 794 199.0

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