ASTROSAT CZTI

Data Quality Report

Orbit 02986

Creation date: 2024-06-27T14:23:06.462822
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_238T05_9000000418_02986cztM0_level2.evt modeM0/AS1G05_238T05_9000000418_02986cztM0_level2_quad_clean.evt
Size (bytes)351,187,20048,398,400
Size334.9 MB 46.2 MB
Events in quadrant A3,244,247273,826
Events in quadrant B2,280,677285,087
Events in quadrant C2,119,909285,387
Events in quadrant D2,656,207275,938

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131633
B0103382
C0100772
D0115162

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A49141693.439153%
B4914180.366300%
C4914100.203500%
D4914581.180301%

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 7069 4915 147 147 2.08% 2.99%
B 7069 4915 14 14 0.20% 0.28%
C 7069 4915 7 7 0.10% 0.14%
D 7069 4915 62 62 0.88% 1.26%

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 9 973221 9530.78 495 483 102.1
A 0 50 163378 1596.03 495 483 102.1
A 0 31 142746 1393.88 495 483 102.1
B 0 219 89188 890.9 517 505 99.5
B 2 249 48033 477.46 517 505 99.5
B 15 85 37621 372.87 517 505 99.5
C 6 80 87260 734.75 500 502 118.1
C 1 16 22687 187.88 500 502 118.1
C 10 21 10650 85.94 500 502 118.1
D 13 114 166630 1260.19 489 477 131.8
D 13 239 117236 885.56 489 477 131.8
D 9 35 114194 862.49 489 477 131.8

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