ASTROSAT CZTI

Data Quality Report

Orbit 12245

Creation date: 2024-06-27T16:24:23.430224
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/AS1C03_005T01_9000001810_12245cztM0_level2.evt modeM0/AS1C03_005T01_9000001810_12245cztM0_level2_quad_clean.evt
Size (bytes)541,287,360136,080,000
Size516.2 MB 129.8 MB
Events in quadrant A4,212,467936,543
Events in quadrant B4,637,376911,336
Events in quadrant C3,506,051932,057
Events in quadrant D3,601,138893,007

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170372
B0179801
C0146451
D0150091

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64291862.893140%
B64295378.352776%
C64291261.959869%
D64291312.037642%

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 7715 6431 33 33 0.43% 0.51%
B 7715 6431 255 255 3.31% 3.97%
C 7715 6431 22 22 0.29% 0.34%
D 7715 6431 42 42 0.54% 0.65%

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 13 251 370107 2233.02 828 814 165.4
A 1 162 187965 1131.65 828 814 165.4
A 1 178 108621 651.88 828 814 165.4
B 4 239 1169334 8074.26 794 779 144.7
B 11 51 156349 1074.93 794 779 144.7
B 0 229 49039 333.46 794 779 144.7
C 15 208 328730 1833.19 793 798 178.9
C 1 16 45300 248.77 793 798 178.9
C 4 175 31645 172.44 793 798 178.9
D 1 52 245545 1308.68 799 779 187.0
D 7 71 98946 524.87 799 779 187.0
D 13 104 65192 344.4 799 779 187.0

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