ASTROSAT CZTI

Data Quality Report

Orbit 15908

Creation date: 2024-06-27T17:15:00.177635
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/AS1A04_143T01_9000002344_15908cztM0_level2.evt modeM0/AS1A04_143T01_9000002344_15908cztM0_level2_quad_clean.evt
Size (bytes)440,919,360104,973,120
Size420.5 MB 100.1 MB
Events in quadrant A3,310,678689,059
Events in quadrant B3,219,670720,284
Events in quadrant C3,165,916677,331
Events in quadrant D3,234,591658,655

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138773
B0134892
C0132202
D0137412

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62231021.639081%
B6223450.723124%
C6223701.124859%
D6223661.060582%

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 7584 6226 23 23 0.30% 0.37%
B 7584 6226 1 1 0.01% 0.02%
C 7584 6226 0 0 0.00% 0.00%
D 7584 6226 28 28 0.37% 0.45%

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 15 239 247539 1548.23 794 778 159.4
A 3 80 8102 45.95 794 778 159.4
A 0 226 6900 38.41 794 778 159.4
B 4 173 28008 178.55 808 790 152.4
B 12 111 17260 108.04 808 790 152.4
B 11 111 14562 90.34 808 790 152.4
C 14 238 119069 655.33 776 783 180.5
C 3 233 13102 68.25 776 783 180.5
C 10 22 8195 41.06 776 783 180.5
D 12 17 165577 874.19 775 755 188.5
D 1 52 43471 226.56 775 755 188.5
D 13 172 39690 206.51 775 755 188.5

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