ASTROSAT CZTI

Data Quality Report

Orbit 11965

Creation date: 2024-06-27T16:20:43.405015
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/AS1G08_076T03_9000001768_11965cztM0_level2.evt modeM0/AS1G08_076T03_9000001768_11965cztM0_level2_quad_clean.evt
Size (bytes)456,125,76090,671,040
Size435.0 MB 86.5 MB
Events in quadrant A3,125,648587,623
Events in quadrant B4,122,096572,486
Events in quadrant C2,743,584593,256
Events in quadrant D3,409,533567,967

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132792
B0162681
C0123471
D0140671

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6078701.151695%
B60783575.873643%
C6078300.493583%
D60781091.793353%

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 7055 6079 2 2 0.03% 0.03%
B 7055 6079 210 210 2.98% 3.45%
C 7055 6079 0 0 0.00% 0.00%
D 7055 6079 69 69 0.98% 1.14%

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 1 162 115705 783.19 723 708 146.8
A 1 178 62427 420.34 723 708 146.8
A 1 161 54196 364.28 723 708 146.8
B 4 239 1014414 7405.87 706 690 136.9
B 15 204 131918 958.7 706 690 136.9
B 11 51 68343 494.25 706 690 136.9
C 14 234 6406 35.18 701 707 162.0
C 13 61 5251 28.05 701 707 162.0
C 0 207 4852 25.59 701 707 162.0
D 1 52 283803 1703.82 700 680 166.2
D 8 195 140273 840.07 700 680 166.2
D 13 104 78869 470.54 700 680 166.2

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