ASTROSAT CZTI

Data Quality Report

Orbit 40872

Creation date: 2024-06-27T22:21:35.969776
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/AS1A12_097T01_9000005574_40872cztM0_level2.fits modeM0/AS1A12_097T01_9000005574_40872cztM0_level2_quad_clean.evt
Size (bytes)409,544,64099,244,800
Size390.6 MB 94.6 MB
Events in quadrant A3,363,500654,432
Events in quadrant B2,747,821688,446
Events in quadrant C3,515,248652,777
Events in quadrant D5,055,050579,765

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135203
B0124432
C0141832
D0191612

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6155150.243704%
B615590.146223%
C6155500.812348%
D61552504.061738%

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 8780 6157 6 6 0.07% 0.10%
B 8780 6157 4 4 0.05% 0.06%
C 8780 6157 46 46 0.52% 0.75%
D 8780 6157 261 261 2.97% 4.24%

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 10 83 583623 4140.27 681 666 140.8
A 13 248 55425 388.91 681 666 140.8
A 12 189 43396 303.47 681 666 140.8
B 15 85 18890 136.43 679 658 133.6
B 0 230 16983 122.16 679 658 133.6
B 12 111 16691 119.97 679 658 133.6
C 14 254 537709 3412.86 665 670 157.4
C 15 214 261917 1660.21 665 670 157.4
C 9 54 86772 547.17 665 670 157.4
D 12 79 1441300 8905.56 654 635 161.8
D 2 249 538801 3326.71 654 635 161.8
D 13 249 204780 1261.93 654 635 161.8

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