ASTROSAT CZTI

Data Quality Report

Orbit 20813

Creation date: 2024-06-27T18:19:50.911132
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_013T01_9000003070_20813cztM0_level2.evt modeM0/AS1A05_013T01_9000003070_20813cztM0_level2_quad_clean.evt
Size (bytes)353,842,56071,150,400
Size337.5 MB 67.9 MB
Events in quadrant A2,326,120504,508
Events in quadrant B2,480,628492,668
Events in quadrant C2,297,423476,182
Events in quadrant D3,328,611389,016

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012642
B012642
C012640
D012640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141244536
B0151215044
C0144384924
D0218429206

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131
B0132
C0131
D0135

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4292461.071761%
B4201761.809093%
C4173942.252576%
D38073699.692671%

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 7504 5531 0 0 0.00% 0.00%
B 7505 5499 10 10 0.13% 0.18%
C 7506 5468 0 0 0.00% 0.00%
D 7502 5058 320 320 4.27% 6.33%

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 0 226 5301 39.29 604 595 119.8
A 3 137 4326 31.15 604 595 119.8
A 12 194 4297 30.91 604 595 119.8
B 7 220 91471 852.03 580 569 106.7
B 0 189 50061 463.89 580 569 106.7
B 3 64 26611 244.09 580 569 106.7
C 14 238 90711 700.04 563 568 128.8
C 9 54 10194 74.75 563 568 128.8
C 13 61 3970 26.42 563 568 128.8
D 9 1 687248 5685.11 506 494 120.8
D 1 20 355752 2940.91 506 494 120.8
D 1 52 343197 2836.98 506 494 120.8

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