ASTROSAT CZTI

Data Quality Report

Orbit 38460

Creation date: 2024-06-27T21:53:03.147238
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_018T01_9000005386_38460cztM0_level2.fits modeM0/AS1A12_018T01_9000005386_38460cztM0_level2_quad_clean.evt
Size (bytes)378,498,24093,559,680
Size361.0 MB 89.2 MB
Events in quadrant A2,947,575657,734
Events in quadrant B3,733,864638,417
Events in quadrant C2,578,016617,372
Events in quadrant D4,344,983553,576

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118783
B0145542
C0108342
D0164152

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5226290.554918%
B52262925.587447%
C522670.133946%
D52262915.568312%

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 7138 5227 21 21 0.29% 0.40%
B 7138 5227 210 210 2.94% 4.02%
C 7138 5227 4 4 0.06% 0.08%
D 7138 5227 289 289 4.05% 5.53%

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 389834 3186.25 610 598 122.2
A 13 248 85570 695.57 610 598 122.2
A 12 189 42638 344.13 610 598 122.2
B 5 184 1154887 10328.49 589 576 111.8
B 0 183 122233 1088.56 589 576 111.8
B 4 232 78364 696.03 589 576 111.8
C 15 214 221377 1663.96 579 583 132.7
C 14 254 53633 399.8 579 583 132.7
C 0 10 13916 100.48 579 583 132.7
D 12 235 983377 7161.42 577 561 137.2
D 12 227 388637 2827.77 577 561 137.2
D 7 38 217692 1582.15 577 561 137.2

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