ASTROSAT CZTI

Data Quality Report

Orbit 46505

Creation date: 2024-06-27T23:23:58.785185
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/AS1A13_068T06_9000006220_46505cztM0_level2.fits modeM0/AS1A13_068T06_9000006220_46505cztM0_level2_quad_clean.evt
Size (bytes)506,413,440116,616,960
Size483.0 MB 111.2 MB
Events in quadrant A6,601,276767,225
Events in quadrant B3,717,761812,864
Events in quadrant C3,294,551783,186
Events in quadrant D4,592,594683,328

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0235852
B0155562
C0145363
D0183492

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69533595.163239%
B69532513.609953%
C6952721.035673%
D69523595.163982%

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 9268 6954 33 33 0.36% 0.47%
B 9268 6954 59 59 0.64% 0.85%
C 9267 6953 0 0 0.00% 0.00%
D 9267 6952 225 225 2.43% 3.24%

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 3312225 19120.78 836 820 173.2
A 9 191 32850 184.95 836 820 173.2
A 13 254 11472 61.5 836 820 173.2
B 0 190 141261 841.25 836 811 167.0
B 5 255 118044 702.19 836 811 167.0
B 5 172 110699 658.19 836 811 167.0
C 9 54 40256 201.92 825 830 195.3
C 9 237 15833 76.84 825 830 195.3
C 14 254 15422 74.73 825 830 195.3
D 13 249 728185 3568.3 807 781 203.9
D 7 80 360349 1763.87 807 781 203.9
D 1 52 151871 741.18 807 781 203.9

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