ASTROSAT CZTI

Data Quality Report

Orbit 31567

Creation date: 2024-06-27T20:30:02.263068
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/AS1A10_056T01_9000004598_31567cztM0_level2.evt modeM0/AS1A10_056T01_9000004598_31567cztM0_level2_quad_clean.evt
Size (bytes)525,087,36098,953,920
Size500.8 MB 94.4 MB
Events in quadrant A2,970,124655,461
Events in quadrant B4,919,298659,435
Events in quadrant C3,286,478634,228
Events in quadrant D4,310,920619,238

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129651
B0191071
C0137701
D0170601

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6132430.701239%
B61321211.973255%
C61331272.070765%
D61331051.712050%

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 7232 6132 1 1 0.01% 0.02%
B 7232 6132 6 6 0.08% 0.10%
C 7233 6133 23 23 0.32% 0.38%
D 7233 6133 40 40 0.55% 0.65%

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 5 168 12511 76.55 766 750 153.6
A 13 254 11164 67.79 766 750 153.6
A 3 137 7681 45.11 766 750 153.6
B 6 159 1701545 11783.72 764 745 144.3
B 4 80 93661 643.75 764 745 144.3
B 0 190 58798 402.21 764 745 144.3
C 3 233 155706 894.08 745 752 173.3
C 14 238 119091 682.81 745 752 173.3
C 10 22 58828 335.09 745 752 173.3
D 8 195 1158209 6544.81 747 726 176.9
D 13 249 146578 824.7 747 726 176.9
D 12 218 127757 718.28 747 726 176.9

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