ASTROSAT CZTI

Data Quality Report

Orbit 49647

Creation date: 2024-12-04T10:34:37.134855
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/AS1T05_233T01_9000006438_49647cztM0_level2.fits modeM0/AS1T05_233T01_9000006438_49647cztM0_level2_quad_clean.evt
Size (bytes)1,102,559,04032,541,120
Size1.0 GB 31.0 MB
Events in quadrant A15,109,507937
Events in quadrant B4,073,410570,851
Events in quadrant C6,757,218352
Events in quadrant D14,418,4063,635

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0489617
B0163141
C0242541
D0468401

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5858585299.897576%
B58583766.418573%
C5859585599.931729%
D5859583399.556238%

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 6827 5857 5697 5697 83.45% 97.27%
B 6828 5858 242 242 3.54% 4.13%
C 6828 5858 695 695 10.18% 11.86%
D 6828 5858 5525 5525 80.92% 94.32%

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 99 6198221 103115.99 179 172 60.1
A 10 83 2826235 47016.78 179 172 60.1
A 12 50 1167960 19428.31 179 172 60.1
B 4 206 739664 5600.79 611 591 132.0
B 5 172 221719 1675.74 611 591 132.0
B 7 0 112738 849.86 611 591 132.0
C 15 180 1802379 91432.12 32 30 19.7
C 15 190 838124 42516.02 32 30 19.7
C 15 163 645121 32725.09 32 30 19.7
D 15 40 3243155 41261.67 163 152 78.6
D 7 45 3024804 38483.53 163 152 78.6
D 7 60 1712811 21790.66 163 152 78.6

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