ASTROSAT CZTI

Data Quality Report

Orbit 38489

Creation date: 2024-06-27T21:53:26.991511
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_38489cztM0_level2.fits modeM0/AS1A12_018T01_9000005386_38489cztM0_level2_quad_clean.evt
Size (bytes)425,249,28088,035,840
Size405.5 MB 84.0 MB
Events in quadrant A3,589,626642,800
Events in quadrant B2,736,345647,760
Events in quadrant C2,421,365600,185
Events in quadrant D6,602,850422,179

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142472
B0111471
C0101821
D0229931

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5028310.616547%
B50281072.128083%
C502850.099443%
D5028143928.619730%

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 6971 5029 9 9 0.13% 0.18%
B 6971 5029 78 78 1.12% 1.55%
C 6971 5029 3 3 0.04% 0.06%
D 6971 5028 1427 1427 20.47% 28.38%

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 15 222 895516 7449.57 594 584 120.1
A 10 83 326574 2713.6 594 584 120.1
A 9 143 30720 250.86 594 584 120.1
B 8 3 274589 2494.69 583 569 109.8
B 0 183 53196 479.12 583 569 109.8
B 4 170 32764 293.11 583 569 109.8
C 15 214 208344 1599.08 562 567 129.9
C 14 254 10359 75.36 562 567 129.9
C 0 10 4498 30.25 562 567 129.9
D 12 227 4231167 35382.55 492 478 119.6
D 10 118 176528 1472.36 492 478 119.6
D 12 235 104764 872.18 492 478 119.6

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