ASTROSAT CZTI

Data Quality Report

Orbit 48231

Creation date: 2024-08-29T01:02:19.629784
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/AS1A13_029T01_9000006422_48231cztM0_level2.fits modeM0/AS1A13_029T01_9000006422_48231cztM0_level2_quad_clean.evt
Size (bytes)497,257,920110,424,960
Size474.2 MB 105.3 MB
Events in quadrant A7,421,984732,881
Events in quadrant B3,576,911761,317
Events in quadrant C3,082,591723,825
Events in quadrant D3,812,025663,608

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0266594
B0149032
C0139302
D0160502

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66175027.586520%
B66171582.387789%
C6617841.269457%
D66171402.115762%

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 7607 6617 100 100 1.31% 1.51%
B 7607 6617 17 17 0.22% 0.26%
C 7607 6618 14 14 0.18% 0.21%
D 7607 6618 65 65 0.85% 0.98%

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 4390759 27456.15 766 749 159.9
A 13 248 33348 203.88 766 749 159.9
A 0 243 18659 112.01 766 749 159.9
B 4 21 202487 1301.59 778 755 155.0
B 0 200 128199 822.28 778 755 155.0
B 5 255 106984 685.4 778 755 155.0
C 12 2 98336 540.84 762 766 180.4
C 14 254 8536 43.07 762 766 180.4
C 0 207 6702 32.9 762 766 180.4
D 2 165 423990 2171.72 765 741 194.9
D 12 233 109793 559.55 765 741 194.9
D 2 249 106116 540.69 765 741 194.9

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