ASTROSAT CZTI

Data Quality Report

Orbit 41361

Creation date: 2024-06-27T22:28:06.669296
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/AS1T05_105T01_9000005658_41361cztM0_level2.fits modeM0/AS1T05_105T01_9000005658_41361cztM0_level2_quad_clean.evt
Size (bytes)296,821,44073,200,960
Size283.1 MB 69.8 MB
Events in quadrant A2,398,908505,002
Events in quadrant B2,174,822521,262
Events in quadrant C2,559,249462,868
Events in quadrant D3,505,432413,090

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01039
B01037
C010313
D010112

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108061088
B0106121050
C0119521623
D0161722696

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A452890.198763%
B4531150.331053%
C44591834.104059%
D43382064.748732%

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 7142 4851 4 4 0.06% 0.08%
B 7144 4835 6 6 0.08% 0.12%
C 7144 4785 176 176 2.46% 3.68%
D 7139 4717 198 198 2.77% 4.20%

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 431374 4091.74 507 496 105.3
A 3 137 5763 50.02 507 496 105.3
A 12 189 5666 49.1 507 496 105.3
B 5 255 132880 1347.09 500 487 98.3
B 0 190 62420 630.17 500 487 98.3
B 12 111 12335 120.55 500 487 98.3
C 0 10 529932 4793.17 468 470 110.5
C 15 214 188471 1701.95 468 470 110.5
C 15 111 10087 87.06 468 470 110.5
D 1 52 958586 8455.74 462 449 113.3
D 2 120 259483 2286.02 462 449 113.3
D 1 47 180185 1586.2 462 449 113.3

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