ASTROSAT CZTI

Data Quality Report

Orbit 17296

Creation date: 2024-06-27T17:34:40.571205
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_010T02_9000002556_17296cztM0_level2.evt modeM0/AS1A05_010T02_9000002556_17296cztM0_level2_quad_clean.evt
Size (bytes)524,848,320117,285,120
Size500.5 MB 111.9 MB
Events in quadrant A3,499,146808,132
Events in quadrant B3,438,303816,046
Events in quadrant C3,395,652754,887
Events in quadrant D5,111,991710,651

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147062
B0144922
C0143742
D0196834

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0240
C0240
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66361291.943942%
B66361021.537071%
C66361171.763110%
D66354636.978146%

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 7916 6637 26 26 0.33% 0.39%
B 7916 6637 0 0 0.00% 0.00%
C 7916 6636 0 0 0.00% 0.00%
D 7915 6636 397 397 5.02% 5.98%

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 4 2 120732 685.12 879 865 175.0
A 0 226 7853 39.94 879 865 175.0
A 12 194 6240 30.72 879 865 175.0
B 15 19 19468 113.51 875 857 164.0
B 12 111 19219 111.99 875 857 164.0
B 11 111 16648 96.31 875 857 164.0
C 14 238 129358 681.17 818 823 188.7
C 0 79 51335 267.69 818 823 188.7
C 3 233 26257 134.79 818 823 188.7
D 13 232 1261998 6497.82 809 789 194.1
D 11 176 421842 2169.29 809 789 194.1
D 10 70 269126 1382.49 809 789 194.1

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