ASTROSAT CZTI

Data Quality Report

Orbit 51847

Creation date: 2025-04-29T17:07:26.916256
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/AS1C09_011T05_9000006466_51847cztM0_level2.fits modeM0/AS1C09_011T05_9000006466_51847cztM0_level2_quad_clean.evt
Size (bytes)2,086,133,760212,019,840
Size1.9 GB 202.2 MB
Events in quadrant A11,654,1131,545,687
Events in quadrant B14,181,9601,668,639
Events in quadrant C15,777,5591,403,008
Events in quadrant D34,263,105598,355

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03520
B03520
C03520
D03522

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04709830
B05445389
C05935430
D0113917125

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A174518514.876511%
B1744413557.767714%
C17452205011.746505%
D174441084262.153176%

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 19257 17460 400 400 2.08% 2.29%
B 19258 17457 737 737 3.83% 4.22%
C 19258 17459 1750 1750 9.09% 10.02%
D 19258 17446 9834 9834 51.06% 56.37%

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 12 3 1222572 2719.94 1816 1769 448.8
A 11 3 875322 1946.27 1816 1769 448.8
A 15 174 643371 1429.49 1816 1769 448.8
B 10 254 1450119 3864.88 1785 1719 374.8
B 5 32 1349452 3596.27 1785 1719 374.8
B 10 41 1149840 3063.63 1785 1719 374.8
C 5 250 2055078 4460.91 1683 1670 460.3
C 15 248 1588033 3446.28 1683 1670 460.3
C 15 219 1135014 2462.12 1683 1670 460.3
D 11 129 26056606 86692.17 1079 1040 300.6
D 3 12 798173 2652.22 1079 1040 300.6
D 8 48 747664 2484.17 1079 1040 300.6

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