ASTROSAT CZTI

Data Quality Report

Orbit 40987

Creation date: 2024-06-27T22:23:02.728715
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/AS1A12_066T01_9000005584_40987cztM0_level2.fits modeM0/AS1A12_066T01_9000005584_40987cztM0_level2_quad_clean.evt
Size (bytes)396,383,040108,938,880
Size378.0 MB 103.9 MB
Events in quadrant A3,645,203730,025
Events in quadrant B3,191,929741,518
Events in quadrant C3,220,452711,872
Events in quadrant D4,098,470652,298

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149473
B0140912
C0136602
D0168452

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6643150.225802%
B6643691.038687%
C6643270.406443%
D66431672.513924%

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 9449 6645 4 4 0.04% 0.06%
B 9449 6645 51 51 0.54% 0.77%
C 9449 6645 23 23 0.24% 0.35%
D 9449 6645 136 136 1.44% 2.05%

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 579176 3761.48 744 728 153.8
A 12 189 183513 1188.6 744 728 153.8
A 13 254 10171 61.41 744 728 153.8
B 5 255 160067 1114.13 733 711 143.0
B 0 229 112664 782.71 733 711 143.0
B 0 186 30710 209.74 733 711 143.0
C 15 214 279257 1640.68 727 731 169.8
C 0 10 103449 605.07 727 731 169.8
C 12 249 6551 34.28 727 731 169.8
D 13 249 814016 4624.6 723 702 175.9
D 1 47 163814 927.47 723 702 175.9
D 9 19 148071 837.96 723 702 175.9

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