ASTROSAT CZTI

Data Quality Report

Orbit 38838

Creation date: 2024-06-27T21:57:05.086587
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/AS1A12_077T06_9000005408_38838cztM0_level2.fits modeM0/AS1A12_077T06_9000005408_38838cztM0_level2_quad_clean.evt
Size (bytes)329,621,76095,647,680
Size314.4 MB 91.2 MB
Events in quadrant A2,749,103651,302
Events in quadrant B2,470,600673,394
Events in quadrant C2,577,887646,721
Events in quadrant D4,014,231574,335

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111753
B0103922
C0105862
D0154552

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5005170.339660%
B5005250.499500%
C5005140.279720%
D50052024.035964%

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 7097 5006 13 13 0.18% 0.26%
B 7097 5006 15 15 0.21% 0.30%
C 7097 5006 8 8 0.11% 0.16%
D 7097 5006 203 203 2.86% 4.06%

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 385987 3223.74 595 585 119.6
A 13 248 31880 261.77 595 585 119.6
A 9 143 18570 150.44 595 585 119.6
B 5 184 62862 545.86 600 584 114.1
B 0 230 26380 226.1 600 584 114.1
B 12 111 14063 118.14 600 584 114.1
C 15 214 206790 1501.52 593 598 137.3
C 0 10 48145 346.24 593 598 137.3
C 14 254 4170 26.01 593 598 137.3
D 13 249 454031 3254.31 576 560 139.3
D 12 235 445576 3193.63 576 560 139.3
D 12 227 369577 2648.23 576 560 139.3

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