ASTROSAT CZTI

Data Quality Report

Orbit 12850

Creation date: 2024-06-27T16:33:06.638601
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/AS1G08_071T01_9000001888_12850cztM0_level2.evt modeM0/AS1G08_071T01_9000001888_12850cztM0_level2_quad_clean.evt
Size (bytes)469,143,36089,058,240
Size447.4 MB 84.9 MB
Events in quadrant A3,279,233568,702
Events in quadrant B4,181,703561,220
Events in quadrant C3,049,851562,507
Events in quadrant D3,249,582545,072

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138232
B0164161
C0134091
D0139471

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6587711.077881%
B65873264.949142%
C6587430.652801%
D6587490.743889%

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 7708 6589 0 0 0.00% 0.00%
B 7708 6589 186 186 2.41% 2.82%
C 7708 6589 1 1 0.01% 0.02%
D 7708 6589 5 5 0.06% 0.08%

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 12 189 105442 632.31 819 802 165.5
A 15 222 18927 109.52 819 802 165.5
A 8 15 9493 52.52 819 802 165.5
B 4 239 704818 4669.48 795 775 150.8
B 3 64 132487 873.56 795 775 150.8
B 0 219 74089 486.25 795 775 150.8
C 14 234 9851 50.65 779 784 179.0
C 13 61 5587 26.83 779 784 179.0
C 3 202 1957 6.55 779 784 179.0
D 1 52 109765 549.23 781 762 198.5
D 13 172 59795 297.45 781 762 198.5
D 13 104 35592 175.49 781 762 198.5

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