ASTROSAT CZTI

Data Quality Report

Orbit 43941

Creation date: 2024-06-27T22:57:27.518809
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_024T02_9000005918_43941cztM0_level2.fits modeM0/AS1A13_024T02_9000005918_43941cztM0_level2_quad_clean.evt
Size (bytes)534,692,160110,462,400
Size509.9 MB 105.3 MB
Events in quadrant A5,541,024737,165
Events in quadrant B3,665,121767,927
Events in quadrant C4,585,867695,730
Events in quadrant D5,446,519647,581

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0217551
B0158471
C0187841
D0212151

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71344075.705074%
B71342353.294085%
C71356218.703574%
D71355597.834618%

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 7419 7136 128 128 1.73% 1.79%
B 7419 7136 22 22 0.30% 0.31%
C 7420 7137 444 444 5.98% 6.22%
D 7420 7137 377 377 5.08% 5.28%

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 15 222 1136178 7039.7 779 762 161.3
A 10 83 1046354 6482.78 779 762 161.3
A 7 3 150686 929.54 779 762 161.3
B 5 235 179423 1177.58 779 755 151.7
B 0 200 168972 1108.7 779 755 151.7
B 0 213 61461 400.1 779 755 151.7
C 14 254 924063 5431.67 723 726 170.0
C 1 241 703448 4133.87 723 726 170.0
C 3 233 108118 631.75 723 726 170.0
D 5 235 791387 4124.61 753 724 191.7
D 13 249 537670 2801.06 753 724 191.7
D 1 52 335216 1744.93 753 724 191.7

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