ASTROSAT CZTI

Data Quality Report

Orbit 47636

Creation date: 2024-07-19T21:13:19.408939
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/AS1A13_071T01_9000006340_47636cztM0_level2.fits modeM0/AS1A13_071T01_9000006340_47636cztM0_level2_quad_clean.evt
Size (bytes)482,123,520109,169,280
Size459.8 MB 104.1 MB
Events in quadrant A7,453,673715,993
Events in quadrant B3,133,342754,565
Events in quadrant C3,067,831717,704
Events in quadrant D3,686,896663,731

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0268930
B0136510
C0138830
D0154690

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65094156.375787%
B6509691.060071%
C6509570.875711%
D65091141.751421%

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 7614 6510 118 118 1.55% 1.81%
B 7614 6510 1 1 0.01% 0.02%
C 7614 6510 19 19 0.25% 0.29%
D 7614 6510 80 80 1.05% 1.23%

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 3841445 24821.22 741 726 154.7
A 9 191 535943 3458.92 741 726 154.7
A 13 248 181403 1167.65 741 726 154.7
B 0 190 57056 384.62 743 719 146.5
B 4 171 33484 223.69 743 719 146.5
B 0 186 31430 209.67 743 719 146.5
C 14 254 81939 477.87 723 725 169.9
C 1 3 64075 372.76 723 725 169.9
C 12 2 56414 327.68 723 725 169.9
D 6 239 364566 2003.42 729 706 181.6
D 2 249 258761 1420.85 729 706 181.6
D 7 55 119844 655.98 729 706 181.6

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