ASTROSAT CZTI

Data Quality Report

Orbit 24995

Creation date: 2024-06-27T19:12:28.837374
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/AS1A07_127T03_9000003662_24995cztM0_level2.evt modeM0/AS1A07_127T03_9000003662_24995cztM0_level2_quad_clean.evt
Size (bytes)476,265,60073,679,040
Size454.2 MB 70.3 MB
Events in quadrant A3,319,671453,693
Events in quadrant B3,527,946460,992
Events in quadrant C3,612,394436,189
Events in quadrant D3,529,291433,634

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140572
B0147052
C0148253
D0147942

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6400580.906250%
B6400821.281250%
C63991382.156587%
D6399550.859509%

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 7575 6401 1 1 0.01% 0.02%
B 7575 6401 6 6 0.08% 0.09%
C 7574 6400 15 15 0.20% 0.23%
D 7574 6400 13 13 0.17% 0.20%

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 13 254 9778 52.82 858 840 169.2
A 3 137 7529 39.53 858 840 169.2
A 0 226 7395 38.74 858 840 169.2
B 5 172 59636 365.47 856 837 160.9
B 0 229 29358 177.27 856 837 160.9
B 3 209 29166 176.08 856 837 160.9
C 7 247 205641 1076.1 818 827 190.3
C 14 238 131320 685.62 818 827 190.3
C 0 10 84545 439.86 818 827 190.3
D 12 153 181517 894.51 835 813 202.0
D 8 195 164421 809.88 835 813 202.0
D 2 234 26631 127.8 835 813 202.0

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