ASTROSAT CZTI

Data Quality Report

Orbit 11866

Creation date: 2024-06-27T16:19:25.940488
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_048T01_9000001752_11866cztM0_level2.evt modeM0/AS1G08_048T01_9000001752_11866cztM0_level2_quad_clean.evt
Size (bytes)475,536,96089,899,200
Size453.5 MB 85.7 MB
Events in quadrant A3,362,680583,445
Events in quadrant B4,394,772561,763
Events in quadrant C2,939,647573,687
Events in quadrant D3,260,340547,296

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143243
B0173762
C0133332
D0141422

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6542400.611434%
B65424106.267197%
C6542110.168144%
D6542390.596148%

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 7713 6544 0 0 0.00% 0.00%
B 7713 6544 287 287 3.72% 4.39%
C 7713 6544 0 0 0.00% 0.00%
D 7713 6544 16 16 0.21% 0.24%

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 8 15 88618 555.7 781 764 158.1
A 1 162 82696 518.24 781 764 158.1
A 13 251 62569 390.93 781 764 158.1
B 4 239 739774 5072.47 764 747 145.7
B 3 64 459328 3147.57 764 747 145.7
B 15 185 66367 450.4 764 747 145.7
C 13 61 5424 26.78 753 757 174.3
C 14 234 2896 12.27 753 757 174.3
C 12 4 2811 11.78 753 757 174.3
D 8 195 185655 1029.61 742 720 179.6
D 1 52 81223 448.19 742 720 179.6
D 13 249 80787 445.77 742 720 179.6

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