ASTROSAT CZTI

Data Quality Report

Orbit 50537

Creation date: 2025-01-31T09:17:24.759768
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_239T01_9000006444_50537cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50537cztM0_level2_quad_clean.evt
Size (bytes)613,319,04095,630,400
Size584.9 MB 91.2 MB
Events in quadrant A4,857,383624,923
Events in quadrant B4,231,824704,489
Events in quadrant C7,202,282568,671
Events in quadrant D5,903,864539,785

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0188032
B0169492
C0259072
D0222192

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65573946.008846%
B65571962.989172%
C655792614.122312%
D655774311.331402%

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 7752 6558 315 315 4.06% 4.80%
B 7752 6558 38 38 0.49% 0.58%
C 7752 6558 640 640 8.26% 9.76%
D 7752 6558 564 564 7.28% 8.60%

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 8 247 942947 5252.11 717 699 179.4
A 4 3 188244 1045.38 717 699 179.4
A 5 240 133488 740.17 717 699 179.4
B 4 170 650127 4290.07 720 694 151.4
B 0 229 157855 1038.19 720 694 151.4
B 7 0 154363 1015.12 720 694 151.4
C 15 174 1654997 8837.87 677 673 187.2
C 15 234 438154 2337.15 677 673 187.2
C 15 232 341214 1819.27 677 673 187.2
D 7 96 975439 5226.88 664 640 186.5
D 8 246 552598 2959.61 664 640 186.5
D 6 42 444472 2379.83 664 640 186.5

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