ASTROSAT CZTI

Data Quality Report

Orbit 42866

Creation date: 2024-06-27T22:45:09.707341
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/AS1T05_138T01_9000005828_42866cztM0_level2.fits modeM0/AS1T05_138T01_9000005828_42866cztM0_level2_quad_clean.evt
Size (bytes)314,282,88084,576,960
Size299.7 MB 80.7 MB
Events in quadrant A2,853,736565,681
Events in quadrant B2,339,648589,346
Events in quadrant C2,552,110566,818
Events in quadrant D3,508,147497,104

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114332
B0102712
C0105842
D0137102

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0340
C0340
D0340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4876460.943396%
B4876230.471698%
C4876470.963905%
D48762364.840033%

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 6998 4877 30 30 0.43% 0.62%
B 6998 4877 17 17 0.24% 0.35%
C 6998 4877 52 52 0.74% 1.07%
D 6998 4877 229 229 3.27% 4.70%

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 10 83 551740 4896.63 540 532 112.6
A 15 237 90584 799.97 540 532 112.6
A 12 189 64589 569.05 540 532 112.6
B 5 255 83381 776.88 545 531 106.6
B 0 245 63436 589.85 545 531 106.6
B 4 171 25431 233.48 545 531 106.6
C 15 214 197660 1591.52 531 535 123.9
C 15 111 126315 1015.5 531 535 123.9
C 14 254 49584 396.0 531 535 123.9
D 12 6 734287 5810.48 514 499 126.3
D 2 249 233774 1847.18 514 499 126.3
D 1 52 149820 1182.39 514 499 126.3

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