ASTROSAT CZTI

Data Quality Report

Orbit 13446

Creation date: 2024-06-27T16:40:54.709792
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_103T01_9000001988_13446cztM0_level2.evt modeM0/AS1A04_103T01_9000001988_13446cztM0_level2_quad_clean.evt
Size (bytes)465,891,84079,695,360
Size444.3 MB 76.0 MB
Events in quadrant A3,376,847496,245
Events in quadrant B3,471,896504,736
Events in quadrant C3,316,921489,568
Events in quadrant D3,500,757467,670

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141623
B0144442
C0139802
D0147142

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6525881.348659%
B65251021.563218%
C6525620.950192%
D6525901.379310%

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 7816 6526 0 0 0.00% 0.00%
B 7816 6526 3 3 0.04% 0.05%
C 7816 6526 0 0 0.00% 0.00%
D 7816 6526 17 17 0.22% 0.26%

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 0 226 7981 40.87 876 859 174.3
A 1 162 7882 40.3 876 859 174.3
A 12 194 6590 32.89 876 859 174.3
B 4 173 22875 135.56 873 854 162.4
B 3 209 19511 114.85 873 854 162.4
B 12 111 18229 106.96 873 854 162.4
C 3 233 37916 194.47 840 848 190.6
C 13 61 6129 27.71 840 848 190.6
C 14 220 2102 6.58 840 848 190.6
D 13 249 323721 1654.43 834 813 195.2
D 2 234 21678 106.9 834 813 195.2
D 2 136 13619 65.61 834 813 195.2

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