ASTROSAT CZTI

Data Quality Report

Orbit 38977

Creation date: 2024-06-27T21:58:52.657749
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_057T01_9000005418_38977cztM0_level2.fits modeM0/AS1A12_057T01_9000005418_38977cztM0_level2_quad_clean.evt
Size (bytes)999,216,000259,009,920
Size952.9 MB 247.0 MB
Events in quadrant A8,332,8251,746,748
Events in quadrant B8,102,3941,774,876
Events in quadrant C9,030,2891,681,277
Events in quadrant D10,291,9491,543,237

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0550
B0550
C0550
D0550

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03260
B03260
C03260
D03260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0341264
B0348733
C0368483
D0415843

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15887500.314723%
B158872961.863159%
C158873272.058287%
D158874622.908038%

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 21349 15891 29 29 0.14% 0.18%
B 21349 15891 219 219 1.03% 1.38%
C 21349 15891 298 298 1.40% 1.88%
D 21349 15891 445 445 2.08% 2.80%

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 1084896 3030.75 1777 1745 357.4
A 9 143 137848 380.83 1777 1745 357.4
A 13 248 134041 370.18 1777 1745 357.4
B 5 172 944865 2789.37 1757 1706 338.1
B 15 85 73089 211.11 1757 1706 338.1
B 0 230 59208 170.06 1757 1706 338.1
C 14 254 1570368 3956.29 1719 1727 396.5
C 15 214 690015 1735.94 1719 1727 396.5
C 12 249 19849 45.7 1719 1727 396.5
D 12 227 1035106 2496.75 1710 1664 413.9
D 12 235 682866 1645.75 1710 1664 413.9
D 2 249 651434 1569.81 1710 1664 413.9

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