ASTROSAT CZTI

Data Quality Report

Orbit 34604

Creation date: 2022-02-21T06:37:54.816512
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_014T01_9000004950_34604cztM0_level2.evt modeM0/AS1C07_014T01_9000004950_34604cztM0_level2_quad_clean.evt
Size (bytes)1,537,891,200187,899,840
Size1.4 GB 179.2 MB
Events in quadrant A7,909,9351,203,492
Events in quadrant B11,281,0211,171,995
Events in quadrant C8,330,0341,190,671
Events in quadrant D18,003,5801,046,006

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03160
B03160
C03160
D03160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0440
B0440
C0440
D0450

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0337034
B0437113
C0339923
D0646073

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A156281971.260558%
B1562811367.269004%
C156281230.787049%
D1562815579.962887%

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 19806 15631 152 152 0.77% 0.97%
B 19806 15631 764 764 3.86% 4.89%
C 19806 15631 80 80 0.40% 0.51%
D 19806 15631 1411 1411 7.12% 9.03%

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 15 169 480143 1269.62 1867 1833 376.7
A 10 83 100525 261.97 1867 1833 376.7
A 9 143 44284 112.68 1867 1833 376.7
B 5 172 2947133 8526.5 1812 1768 345.4
B 0 189 491434 1417.53 1812 1768 345.4
B 4 171 251173 722.0 1812 1768 345.4
C 15 214 644238 1523.38 1817 1837 421.7
C 0 10 351411 828.97 1817 1837 421.7
C 14 67 139304 325.99 1817 1837 421.7
D 8 195 7265307 15260.84 1749 1720 476.0
D 7 223 974532 2043.88 1749 1720 476.0
D 7 38 924824 1939.45 1749 1720 476.0

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