ASTROSAT CZTI

Data Quality Report

Orbit 42649

Creation date: 2024-06-27T22:42:37.278271
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/AS1A05_174T01_9000005820_42649cztM0_level2.fits modeM0/AS1A05_174T01_9000005820_42649cztM0_level2_quad_clean.evt
Size (bytes)303,013,44088,136,640
Size289.0 MB 84.1 MB
Events in quadrant A2,845,345592,840
Events in quadrant B2,321,755609,862
Events in quadrant C2,487,317592,076
Events in quadrant D3,178,799529,876

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0290
C0290
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112862
B099842
C0100792
D0126286

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4916180.366151%
B491650.101709%
C491660.122050%
D49151703.458800%

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 7039 4917 9 9 0.13% 0.18%
B 7039 4917 0 0 0.00% 0.00%
C 7039 4917 6 6 0.09% 0.12%
D 7038 4916 142 142 2.02% 2.89%

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 531007 4450.03 578 566 119.2
A 10 255 60872 505.93 578 566 119.2
A 7 3 12291 98.36 578 566 119.2
B 0 245 28771 257.14 570 556 109.7
B 3 112 24231 215.76 570 556 109.7
B 0 168 13646 119.3 570 556 109.7
C 15 214 206392 1552.99 570 574 132.5
C 5 250 34261 254.18 570 574 132.5
C 14 254 11977 86.04 570 574 132.5
D 1 52 377014 2758.4 564 549 136.5
D 2 249 247419 1808.84 564 549 136.5
D 13 249 195305 1427.0 564 549 136.5

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