ASTROSAT CZTI

Data Quality Report

Orbit 51039

Creation date: 2025-03-06T05:16:31.439178
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_001T02_9000006452_51039cztM0_level2.fits modeM0/AS1C07_001T02_9000006452_51039cztM0_level2_quad_clean.evt
Size (bytes)2,072,298,240229,806,720
Size1.9 GB 219.2 MB
Events in quadrant A16,961,3741,570,182
Events in quadrant B18,038,0571,519,485
Events in quadrant C16,618,8461,446,799
Events in quadrant D23,670,9191,147,761

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03760
B03760
C03760
D03760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0633233
B0665223
C0624063
D0834067

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1846212376.700249%
B18463320917.380707%
C18463219311.877810%
D18462479025.945185%

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 19727 18465 994 994 5.04% 5.38%
B 19728 18467 2181 2181 11.06% 11.81%
C 19728 18467 1869 1869 9.47% 10.12%
D 19726 18462 4447 4447 22.54% 24.09%

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 10 253 2728879 5879.89 1885 1841 463.8
A 12 3 1901216 4095.33 1885 1841 463.8
A 12 80 1365442 2940.12 1885 1841 463.8
B 12 32 3585929 9480.8 1792 1728 378.0
B 3 249 2722130 7195.91 1792 1728 378.0
B 4 81 1802617 4763.64 1792 1728 378.0
C 13 3 1885458 3786.29 1795 1783 497.5
C 4 5 1328732 2667.24 1795 1783 497.5
C 15 147 1271247 2551.69 1795 1783 497.5
D 8 176 4940088 10734.66 1635 1583 460.1
D 15 93 2914760 6332.27 1635 1583 460.1
D 15 184 2764168 6004.94 1635 1583 460.1

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