ASTROSAT CZTI

Data Quality Report

Orbit 39384

Creation date: 2024-06-27T22:03:56.785732
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_9000005470_39384cztM0_level2.fits modeM0/AS1A12_018T01_9000005470_39384cztM0_level2_quad_clean.evt
Size (bytes)412,090,56086,287,680
Size393.0 MB 82.3 MB
Events in quadrant A2,678,959597,638
Events in quadrant B2,557,942612,622
Events in quadrant C2,632,280583,118
Events in quadrant D6,969,003445,154

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113932
B0112161
C0112151
D0244071

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A534580.149673%
B5345240.449018%
C5345100.187091%
D5345122322.881197%

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 7018 5346 2 2 0.03% 0.04%
B 7018 5346 7 7 0.10% 0.13%
C 7018 5346 2 2 0.03% 0.04%
D 7018 5346 1047 1047 14.92% 19.58%

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 387106 3212.96 589 576 120.3
A 13 254 7059 53.89 589 576 120.3
A 3 137 6651 50.5 589 576 120.3
B 5 172 220473 1926.03 588 570 114.2
B 12 111 14557 122.51 588 570 114.2
B 11 111 13522 113.44 588 570 114.2
C 15 214 227523 1665.4 581 584 136.3
C 14 254 79793 581.28 581 584 136.3
C 9 187 37678 272.22 581 584 136.3
D 12 235 4535756 35473.91 523 506 127.8
D 13 249 190163 1483.46 523 506 127.8
D 12 233 181668 1417.02 523 506 127.8

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