ASTROSAT CZTI

Data Quality Report

Orbit 16761

Creation date: 2024-06-27T17:27:17.524552
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/AS1A05_004T05_9000002488_16761cztM0_level2.evt modeM0/AS1A05_004T05_9000002488_16761cztM0_level2_quad_clean.evt
Size (bytes)802,670,400100,647,360
Size765.5 MB 96.0 MB
Events in quadrant A4,075,976716,107
Events in quadrant B3,974,797716,339
Events in quadrant C3,920,847678,008
Events in quadrant D11,902,776487,267

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161883
B0161532
C0159672
D0398302

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64352473.838384%
B64351342.082362%
C64351462.268842%
D6435335152.074592%

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 7766 6437 104 104 1.34% 1.62%
B 7766 6437 21 21 0.27% 0.33%
C 7766 6437 11 11 0.14% 0.17%
D 7766 6437 2925 2925 37.66% 45.44%

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 15 174 541478 3017.18 898 881 179.2
A 14 4 80957 446.92 898 881 179.2
A 0 226 8151 40.58 898 881 179.2
B 0 219 164015 992.57 882 863 164.4
B 15 35 138941 840.02 882 863 164.4
B 10 16 67164 403.35 882 863 164.4
C 3 233 315193 1627.36 842 848 193.2
C 0 207 177481 914.42 842 848 193.2
C 14 238 132261 680.32 842 848 193.2
D 1 52 6557087 40334.39 680 662 162.6
D 15 0 1754185 10787.48 680 662 162.6
D 13 232 547752 3365.64 680 662 162.6

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