ASTROSAT CZTI

Data Quality Report

Orbit 20161110_G06_024T01_9000000780_level2

Creation date: 2025-11-07T15:21:25.441377
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_024T01_9000000780cztM0_level2.fits modeM0/AS1G06_024T01_9000000780cztM0_level2_quad_clean.evt
Size (bytes)250,024,320259,871,040
Size238.4 MB 247.8 MB
Events in quadrant A1,481,9641,546,191
Events in quadrant B1,415,6301,514,758
Events in quadrant C1,480,5061,508,335
Events in quadrant D1,258,6521,368,133

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0587230
B0649170
C0580100
D0621100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05740
B05840
C05840
D05840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A280954401.566115%
B2784810443.748923%
C282083921.389677%
D280275541.976665%

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 47804 29897 0 0 0.00% 0.00%
B 47804 29622 0 0 0.00% 0.00%
C 47804 29948 0 0 0.00% 0.00%
D 47804 29806 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 14 188 1451 10.84 383 355 101.1
A 0 29 1447 10.8 383 355 101.1
A 14 204 1287 9.22 383 355 101.1
B 2 9 1240 11.35 372 352 78.2
B 12 226 1057 9.01 372 352 78.2
B 14 254 1033 8.71 372 352 78.2
C 12 241 1049 6.44 390 359 107.2
C 1 80 1048 6.43 390 359 107.2
C 2 191 1013 6.1 390 359 107.2
D 3 31 984 6.66 359 325 99.0
D 3 14 983 6.65 359 325 99.0
D 11 82 944 6.25 359 325 99.0

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