ASTROSAT CZTI

Data Quality Report

Orbit 15884

Creation date: 2024-06-27T17:14:45.325893
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_15884cztM0_level2.evt modeM0/AS1A04_143T01_9000002344_15884cztM0_level2_quad_clean.evt
Size (bytes)89,928,00018,034,560
Size85.8 MB 17.2 MB
Events in quadrant A657,729110,512
Events in quadrant B657,962110,210
Events in quadrant C674,466108,831
Events in quadrant D629,888106,923

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010577
B010773
C010472
D010676

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112928335
B0114548562
C0110748113
D0109197964

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A146510.068259%
B142510.070175%
C146940.272294%
D147100.000000%

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 4896 1987 0 0 0.00% 0.00%
B 4955 1889 0 0 0.00% 0.00%
C 4948 1903 0 0 0.00% 0.00%
D 4913 1950 0 0 0.00% 0.00%

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 2661 69.21 169 165 36.1
A 7 16 2312 59.53 169 165 36.1
A 0 226 1488 36.68 169 165 36.1
B 5 65 6875 197.76 163 159 34.0
B 4 216 5079 144.88 163 159 34.0
B 12 111 3792 106.98 163 159 34.0
C 14 238 25564 640.88 162 162 39.6
C 3 233 8375 207.21 162 162 39.6
C 8 128 2478 58.43 162 162 39.6
D 2 234 5758 131.07 165 160 42.7
D 1 52 1794 38.26 165 160 42.7
D 14 226 1557 32.71 165 160 42.7

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