ASTROSAT CZTI

Data Quality Report

Orbit 33785

Creation date: 2024-06-27T20:52:38.333466
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_086T01_9000004820_33785cztM0_level2.evt modeM0/AS1A11_086T01_9000004820_33785cztM0_level2_quad_clean.evt
Size (bytes)762,762,24057,188,160
Size727.4 MB 54.5 MB
Events in quadrant A3,813,095405,778
Events in quadrant B3,630,718404,757
Events in quadrant C3,313,906413,100
Events in quadrant D12,001,181151,828

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146983
B0141422
C0131232
D0390342

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A50593857.610200%
B50592795.514924%
C50591232.431311%
D5059402779.600712%

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 7152 5060 284 284 3.97% 5.61%
B 7152 5060 203 203 2.84% 4.01%
C 7152 5060 76 76 1.06% 1.50%
D 7152 5060 3975 3975 55.58% 78.56%

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 15 237 1125042 8554.91 661 652 131.4
A 15 169 95902 724.71 661 652 131.4
A 13 6 12557 90.58 661 652 131.4
B 5 172 728924 5927.24 665 650 122.9
B 4 251 80698 651.49 665 650 122.9
B 0 197 41364 331.36 665 650 122.9
C 0 10 312524 2075.55 662 670 150.3
C 15 214 218016 1446.55 662 670 150.3
C 3 233 116580 771.44 662 670 150.3
D 12 235 7695511 86810.52 356 345 88.6
D 8 195 836433 9432.06 356 345 88.6
D 12 233 783991 8840.45 356 345 88.6

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