ASTROSAT CZTI

Data Quality Report

Orbit 36647

Creation date: 2024-06-27T21:29:41.953935
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/AS1A11_049T04_9000005230_36647cztM0_level2.evt modeM0/AS1A11_049T04_9000005230_36647cztM0_level2_quad_clean.evt
Size (bytes)417,720,96058,294,080
Size398.4 MB 55.6 MB
Events in quadrant A2,764,633358,905
Events in quadrant B2,831,497356,008
Events in quadrant C3,361,299341,502
Events in quadrant D3,325,030329,056

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115643
B0117852
C0132122
D0136812

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5417140.258446%
B5417811.495293%
C54171863.433635%
D54171683.101348%

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 7091 5418 5 5 0.07% 0.09%
B 7091 5418 57 57 0.80% 1.05%
C 7091 5418 138 138 1.95% 2.55%
D 7091 5418 120 120 1.69% 2.21%

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 205655 1604.9 632 622 127.8
A 9 143 91536 711.63 632 622 127.8
A 13 6 11609 86.0 632 622 127.8
B 0 190 137045 1132.5 625 609 120.5
B 5 255 104033 858.48 625 609 120.5
B 0 199 53780 441.35 625 609 120.5
C 0 10 545592 3853.65 602 606 141.4
C 15 214 227855 1606.9 602 606 141.4
C 0 207 86647 608.4 602 606 141.4
D 12 6 401534 2719.34 602 587 147.4
D 7 223 97095 654.55 602 587 147.4
D 1 20 83723 563.85 602 587 147.4

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