ASTROSAT CZTI

Data Quality Report

Orbit 51309

Creation date: 2025-03-24T09:04:32.671570
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/AS1C07_001T03_9000006456_51309cztM0_level2.fits modeM0/AS1C07_001T03_9000006456_51309cztM0_level2_quad_clean.evt
Size (bytes)766,071,36098,435,520
Size730.6 MB 93.9 MB
Events in quadrant A7,696,729645,251
Events in quadrant B4,765,298710,814
Events in quadrant C6,510,998594,830
Events in quadrant D8,823,622523,848

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02807844
B01921028
C02445040
D03143430

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72595117.039537%
B72604015.523416%
C7260101413.966942%
D7260142219.586777%

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 8914 7261 329 329 3.69% 4.53%
B 8915 7262 215 215 2.41% 2.96%
C 8915 7262 806 806 9.04% 11.10%
D 8915 7262 1520 1520 17.05% 20.93%

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 12 3 2808520 15156.11 747 727 185.3
A 12 250 927297 5001.51 747 727 185.3
A 12 194 329030 1772.14 747 727 185.3
B 5 172 595776 3724.43 752 726 159.8
B 10 254 271895 1697.25 752 726 159.8
B 5 185 216177 1348.51 752 726 159.8
C 4 12 2746446 14132.67 703 698 194.3
C 10 252 237214 1217.37 703 698 194.3
C 13 3 138593 709.76 703 698 194.3
D 8 176 2934442 15206.6 691 664 192.9
D 12 2 1019839 5282.67 691 664 192.9
D 6 42 495375 2564.23 691 664 192.9

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