ASTROSAT CZTI

Data Quality Report

Orbit 37839

Creation date: 2024-06-27T21:45:08.792642
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/AS1C07_001T12_9000005352_37839cztM0_level2.evt modeM0/AS1C07_001T12_9000005352_37839cztM0_level2_quad_clean.evt
Size (bytes)488,246,40089,366,400
Size465.6 MB 85.2 MB
Events in quadrant A2,747,621644,023
Events in quadrant B2,785,605641,992
Events in quadrant C2,605,873604,792
Events in quadrant D6,315,486471,763

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110572
B0112001
C0104481
D0222021

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4894240.490396%
B4894430.878627%
C4894270.551696%
D4894124425.418880%

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 6987 4895 11 11 0.16% 0.22%
B 6987 4895 32 32 0.46% 0.65%
C 6987 4895 29 29 0.42% 0.59%
D 6987 4895 1100 1100 15.74% 22.47%

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 10 83 300438 2510.47 598 589 119.4
A 9 143 70193 582.76 598 589 119.4
A 15 222 21064 171.43 598 589 119.4
B 0 229 182615 1687.69 582 569 107.9
B 5 172 115195 1062.66 582 569 107.9
B 0 213 89317 822.75 582 569 107.9
C 15 214 221721 1722.96 562 568 128.4
C 0 10 112728 873.81 562 568 128.4
C 1 23 39639 304.39 562 568 128.4
D 1 52 1902855 16246.08 486 473 117.1
D 12 227 749449 6396.15 486 473 117.1
D 12 233 680472 5807.1 486 473 117.1

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