ASTROSAT CZTI

Data Quality Report

Orbit 08843

Creation date: 2024-06-27T15:37:56.411846
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/AS1G07_087T01_9000001228_08843cztM0_level2.evt modeM0/AS1G07_087T01_9000001228_08843cztM0_level2_quad_clean.evt
Size (bytes)474,998,400114,243,840
Size453.0 MB 109.0 MB
Events in quadrant A3,598,371769,059
Events in quadrant B3,444,419778,994
Events in quadrant C2,991,358749,493
Events in quadrant D3,925,421724,892

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147112
B0140531
C0130011
D0157831

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6269951.515393%
B62691312.089647%
C6269610.973042%
D62692343.732653%

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 7574 6269 2 2 0.03% 0.03%
B 7574 6270 34 34 0.45% 0.54%
C 7574 6269 0 0 0.00% 0.00%
D 7574 6269 154 154 2.03% 2.46%

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 5 442659 2695.76 812 796 163.9
A 15 174 11148 63.15 812 796 163.9
A 5 16 9724 54.47 812 796 163.9
B 4 48 224980 1487.4 805 787 150.7
B 0 214 46406 302.66 805 787 150.7
B 0 213 26011 167.35 805 787 150.7
C 13 61 5851 29.16 766 770 174.3
C 3 202 2082 7.53 766 770 174.3
C 1 16 1703 5.35 766 770 174.3
D 1 52 479846 2476.14 767 747 193.5
D 8 195 237029 1221.18 767 747 193.5
D 11 129 102886 527.89 767 747 193.5

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