ASTROSAT CZTI

Data Quality Report

Orbit 07975

Creation date: 2024-06-27T15:26:15.863280
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/AS1G06_077T01_9000001090_07975cztM0_level2.evt modeM0/AS1G06_077T01_9000001090_07975cztM0_level2_quad_clean.evt
Size (bytes)460,088,64094,034,880
Size438.8 MB 89.7 MB
Events in quadrant A2,996,756605,730
Events in quadrant B3,105,494634,945
Events in quadrant C3,058,682630,101
Events in quadrant D4,353,175545,716

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129163
B0130812
C0131542
D0172352

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6174340.550696%
B6174470.761257%
C6174380.615484%
D61745278.535795%

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 7514 6175 2 2 0.03% 0.03%
B 7514 6175 0 0 0.00% 0.00%
C 7514 6175 0 0 0.00% 0.00%
D 7514 6175 400 400 5.32% 6.48%

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 0 128 26850 168.51 764 749 154.9
A 13 251 12090 73.22 764 749 154.9
A 0 254 10250 61.34 764 749 154.9
B 4 97 66044 445.77 779 763 146.4
B 12 111 15822 102.83 779 763 146.4
B 4 239 14120 91.21 779 763 146.4
C 1 16 69841 392.0 763 768 176.2
C 13 61 5802 28.57 763 768 176.2
C 8 143 5253 25.45 763 768 176.2
D 1 52 972147 5603.01 716 696 173.4
D 1 20 302623 1741.41 716 696 173.4
D 2 14 208392 1197.92 716 696 173.4

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