ASTROSAT CZTI

Data Quality Report

Orbit 15893

Creation date: 2024-06-27T17:14:50.882430
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_15893cztM0_level2.evt modeM0/AS1A04_143T01_9000002344_15893cztM0_level2_quad_clean.evt
Size (bytes)450,532,800104,794,560
Size429.7 MB 99.9 MB
Events in quadrant A3,300,442686,539
Events in quadrant B3,434,547717,270
Events in quadrant C3,381,028674,823
Events in quadrant D3,101,789657,048

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138343
B0142002
C0138712
D0133452

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62771021.624980%
B62771292.055122%
C62771161.848017%
D6277450.716903%

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 9023 6280 6 6 0.07% 0.10%
B 9023 6280 5 5 0.06% 0.08%
C 9023 6280 0 0 0.00% 0.00%
D 9023 6280 2 2 0.02% 0.03%

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 107981 638.16 829 813 167.9
A 0 226 7308 38.68 829 813 167.9
A 12 194 6079 31.36 829 813 167.9
B 4 173 39910 247.13 841 822 158.2
B 0 189 29241 179.68 841 822 158.2
B 0 230 21478 130.6 841 822 158.2
C 14 238 124975 660.15 805 813 188.1
C 3 233 105869 558.57 805 813 188.1
C 0 207 7113 33.5 805 813 188.1
D 2 234 27595 135.88 810 786 197.3
D 13 172 16926 81.8 810 786 197.3
D 2 120 12882 61.31 810 786 197.3

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