ASTROSAT CZTI

Data Quality Report

Orbit 04474

Creation date: 2024-06-27T14:42:36.222274
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_253T03_9000000562_04474cztM0_level2.evt modeM0/AS1G05_253T03_9000000562_04474cztM0_level2_quad_clean.evt
Size (bytes)480,960,00061,390,080
Size458.7 MB 58.5 MB
Events in quadrant A4,671,800350,813
Events in quadrant B2,984,623365,208
Events in quadrant C3,006,134368,797
Events in quadrant D3,488,509347,247

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0179724
B0126991
C0130531
D0144971

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61075138.400196%
B61081051.719057%
C61081171.915521%
D61082313.781925%

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 7143 6109 291 291 4.07% 4.76%
B 7143 6109 0 0 0.00% 0.00%
C 7143 6109 15 15 0.21% 0.25%
D 7143 6109 100 100 1.40% 1.64%

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 0 13 1461913 9912.19 717 699 147.4
A 0 118 390803 2646.28 717 699 147.4
A 0 226 43858 292.77 717 699 147.4
B 15 204 37647 255.77 743 726 144.4
B 4 48 22876 153.44 743 726 144.4
B 15 185 15675 103.56 743 726 144.4
C 14 48 98498 582.67 721 724 167.8
C 9 54 51984 305.48 721 724 167.8
C 9 16 15885 90.35 721 724 167.8
D 13 235 551263 3169.01 710 687 173.7
D 5 51 70523 401.96 710 687 173.7
D 12 79 60104 341.99 710 687 173.7

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