ASTROSAT CZTI

Data Quality Report

Orbit 05474

Creation date: 2024-06-27T14:55:38.383659
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/AS1T01_138T01_9000000698_05474cztM0_level2.evt modeM0/AS1T01_138T01_9000000698_05474cztM0_level2_quad_clean.evt
Size (bytes)512,182,08074,067,840
Size488.5 MB 70.6 MB
Events in quadrant A3,301,211444,627
Events in quadrant B3,708,206442,286
Events in quadrant C3,142,372450,654
Events in quadrant D4,872,818405,962

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150403
B0159122
C0147142
D0196252

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7162851.186819%
B71621251.745323%
C7162460.642279%
D71625798.084334%

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 8867 7164 14 14 0.16% 0.20%
B 8867 7164 10 10 0.11% 0.14%
C 8867 7164 0 0 0.00% 0.00%
D 8867 7164 421 421 4.75% 5.88%

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 62222 361.24 827 809 170.0
A 0 50 49290 285.17 827 809 170.0
A 0 226 8129 43.06 827 809 170.0
B 15 204 270320 1672.82 836 815 161.1
B 4 48 47837 291.87 836 815 161.1
B 11 51 38497 233.89 836 815 161.1
C 13 61 6512 30.54 802 807 186.8
C 12 4 4330 18.86 802 807 186.8
C 8 222 3678 15.37 802 807 186.8
D 2 152 919732 4796.26 770 746 191.6
D 2 33 763155 3979.07 770 746 191.6
D 8 195 63205 325.98 770 746 191.6

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