ASTROSAT CZTI

Data Quality Report

Orbit 38108

Creation date: 2024-06-27T21:48:30.104489
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/AS1A11_065T21_9000005364_38108cztM0_level2.fits modeM0/AS1A11_065T21_9000005364_38108cztM0_level2_quad_clean.evt
Size (bytes)541,123,200117,584,640
Size516.1 MB 112.1 MB
Events in quadrant A5,286,104792,313
Events in quadrant B3,446,643808,807
Events in quadrant C3,708,045770,914
Events in quadrant D7,045,985699,225

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02040853
B01478738
C01523370
D026125249

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70331992.829518%
B7032510.725256%
C7020480.683761%
D69923014.304920%

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 9923 7053 150 150 1.51% 2.13%
B 9923 7050 26 26 0.26% 0.37%
C 9923 7048 40 40 0.40% 0.57%
D 9923 7041 225 225 2.27% 3.20%

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 16 1343413 8268.74 800 783 162.4
A 10 83 430787 2648.23 800 783 162.4
A 12 194 202609 1242.97 800 783 162.4
B 0 229 158493 1018.18 802 778 154.9
B 5 172 45789 290.58 802 778 154.9
B 0 230 30069 189.1 802 778 154.9
C 15 214 287218 1555.88 782 788 184.1
C 1 23 245112 1327.16 782 788 184.1
C 3 233 70536 378.87 782 788 184.1
D 12 235 3244643 17036.52 769 745 190.4
D 13 138 240611 1259.74 769 745 190.4
D 1 52 117715 614.31 769 745 190.4

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