ASTROSAT CZTI

Data Quality Report

Orbit 41879

Creation date: 2024-06-27T22:32:05.424704
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_077T12_9000005692_41879cztM0_level2.fits modeM0/AS1A12_077T12_9000005692_41879cztM0_level2_quad_clean.evt
Size (bytes)41,546,88011,433,600
Size39.6 MB 10.9 MB
Events in quadrant A490,17374,338
Events in quadrant B287,94780,240
Events in quadrant C295,91873,799
Events in quadrant D411,93266,733

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018516
B012694
C012616
D0167835

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A626365.750799%
B62600.000000%
C62400.000000%
D61381.305057%

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 629 628 31 31 4.93% 4.94%
B 629 628 0 0 0.00% 0.00%
C 629 628 0 0 0.00% 0.00%
D 629 624 15 15 2.38% 2.40%

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 14 24 161670 10031.66 69 68 16.1
A 10 83 46976 2911.88 69 68 16.1
A 7 3 12401 765.59 69 68 16.1
B 0 156 6683 410.74 70 69 16.1
B 0 190 1757 104.83 70 69 16.1
B 12 111 1678 99.92 70 69 16.1
C 15 214 24745 1403.65 67 67 17.6
C 0 10 7197 405.54 67 67 17.6
C 13 61 475 23.21 67 67 17.6
D 12 6 107322 6082.73 65 63 17.6
D 5 222 50458 2857.93 65 63 17.6
D 2 234 2116 116.43 65 63 17.6

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