ASTROSAT CZTI

Data Quality Report

Orbit 14435

Creation date: 2024-06-27T16:55:08.952090
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/AS1G08_025T01_9000002130_14435cztM0_level2.evt modeM0/AS1G08_025T01_9000002130_14435cztM0_level2_quad_clean.evt
Size (bytes)500,780,16089,997,120
Size477.6 MB 85.8 MB
Events in quadrant A3,325,219575,932
Events in quadrant B3,470,495576,388
Events in quadrant C3,603,867567,360
Events in quadrant D4,305,447532,427

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141861
B0146740
C0146520
D0174390

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67832794.113224%
B67832894.260652%
C67831932.845349%
D67835578.211706%

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 6784 6784 0 0 0.00% 0.00%
B 6784 6784 12 12 0.18% 0.18%
C 6784 6784 2 2 0.03% 0.03%
D 6784 6784 312 312 4.60% 4.60%

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 8 15 101132 588.41 825 806 170.5
A 12 189 41752 240.15 825 806 170.5
A 0 226 7504 39.28 825 806 170.5
B 0 219 143702 901.39 817 793 158.5
B 10 245 31955 196.55 817 793 158.5
B 0 189 24066 146.79 817 793 158.5
C 3 233 469217 2537.41 795 795 184.6
C 8 128 12626 64.09 795 795 184.6
C 0 207 11180 56.25 795 795 184.6
D 10 199 981079 5303.53 771 749 184.8
D 2 120 292052 1575.93 771 749 184.8
D 12 110 67073 358.81 771 749 184.8

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