ASTROSAT CZTI

Data Quality Report

Orbit 38752

Creation date: 2024-06-27T21:55:59.000714
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_054T01_9000005392_38752cztM0_level2.fits modeM0/AS1A12_054T01_9000005392_38752cztM0_level2_quad_clean.evt
Size (bytes)359,455,68095,258,880
Size342.8 MB 90.8 MB
Events in quadrant A2,813,562651,951
Events in quadrant B2,570,950672,112
Events in quadrant C2,921,584625,599
Events in quadrant D4,589,449565,597

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115293
B0111332
C0118622
D0173212

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5273140.265504%
B5273450.853404%
C5273891.687844%
D52731833.470510%

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 7396 5274 8 8 0.11% 0.15%
B 7396 5274 22 22 0.30% 0.42%
C 7396 5274 83 83 1.12% 1.57%
D 7396 5274 149 149 2.01% 2.83%

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 398025 3237.48 609 600 122.8
A 13 248 31790 254.08 609 600 122.8
A 9 143 27149 216.27 609 600 122.8
B 15 85 58195 498.82 607 592 115.5
B 5 184 46086 393.96 607 592 115.5
B 5 172 34637 294.82 607 592 115.5
C 14 254 279303 2030.81 587 591 137.2
C 15 214 233048 1693.78 587 591 137.2
C 0 10 93912 679.98 587 591 137.2
D 2 16 1590507 11182.97 578 563 142.2
D 10 118 195048 1367.92 578 563 142.2
D 2 249 184135 1291.16 578 563 142.2

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