ASTROSAT CZTI

Data Quality Report

Orbit 26664

Creation date: 2024-06-27T19:31:33.166104
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/AS1A09_145T01_9000003848_26664cztM0_level2.evt modeM0/AS1A09_145T01_9000003848_26664cztM0_level2_quad_clean.evt
Size (bytes)556,721,28085,651,200
Size530.9 MB 81.7 MB
Events in quadrant A3,692,616553,299
Events in quadrant B3,628,394556,049
Events in quadrant C3,663,184531,404
Events in quadrant D5,422,836486,631

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149020
B0144770
C0146390
D0203470

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66901301.943199%
B66911462.182036%
C66911792.675235%
D669174711.164250%

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 7835 6691 0 0 0.00% 0.00%
B 7836 6692 0 0 0.00% 0.00%
C 7836 6692 6 6 0.08% 0.09%
D 7836 6691 439 439 5.60% 6.56%

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 0 13 83489 439.36 936 920 187.9
A 13 254 11989 58.9 936 920 187.9
A 0 226 8223 38.86 936 920 187.9
B 3 112 28988 162.14 914 893 173.3
B 12 111 20304 112.02 914 893 173.3
B 11 111 18210 99.94 914 893 173.3
C 14 238 144617 705.73 881 888 203.7
C 2 16 47149 227.15 881 888 203.7
C 15 208 32253 154.01 881 888 203.7
D 7 80 1374518 6570.76 864 841 209.1
D 1 52 319488 1524.2 864 841 209.1
D 2 250 236823 1128.78 864 841 209.1

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