ASTROSAT CZTI

Data Quality Report

Orbit 04757

Creation date: 2024-06-27T14:46:25.522556
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/AS1G05_195T01_9000000598_04757cztM0_level2.evt modeM0/AS1G05_195T01_9000000598_04757cztM0_level2_quad_clean.evt
Size (bytes)472,798,08091,033,920
Size450.9 MB 86.8 MB
Events in quadrant A3,110,268575,570
Events in quadrant B3,460,885573,788
Events in quadrant C3,285,469576,934
Events in quadrant D3,996,283552,669

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140012
B0148181
C0143801
D0166741

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6862650.947246%
B6862630.918100%
C6862580.845235%
D68621371.996502%

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 7827 6862 0 0 0.00% 0.00%
B 7827 6863 3 3 0.04% 0.04%
C 7827 6863 7 7 0.09% 0.10%
D 7827 6862 71 71 0.91% 1.03%

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 13 251 9419 51.99 805 786 166.0
A 0 226 8212 44.73 805 786 166.0
A 12 194 8048 43.74 805 786 166.0
B 14 167 139249 892.06 805 786 155.2
B 15 204 76434 487.37 805 786 155.2
B 15 54 38225 241.2 805 786 155.2
C 14 48 160580 889.47 773 775 179.7
C 7 189 73145 402.81 773 775 179.7
C 12 4 19220 102.66 773 775 179.7
D 11 132 480508 2559.9 773 749 187.4
D 2 234 132594 703.5 773 749 187.4
D 2 136 127642 677.08 773 749 187.4

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