ASTROSAT CZTI

Data Quality Report

Orbit 27487

Creation date: 2024-06-27T19:40:32.718719
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/AS1T03_249T01_9000003934_27487cztM0_level2.evt modeM0/AS1T03_249T01_9000003934_27487cztM0_level2_quad_clean.evt
Size (bytes)503,046,720109,814,400
Size479.7 MB 104.7 MB
Events in quadrant A3,394,893736,835
Events in quadrant B3,688,734753,047
Events in quadrant C3,458,152703,563
Events in quadrant D4,248,945675,912

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139710
B0149600
C0142530
D0169780

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6552480.732601%
B65521301.984127%
C65511011.541749%
D65511051.602809%

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 7852 6553 2 2 0.03% 0.03%
B 7852 6552 49 49 0.62% 0.75%
C 7851 6551 4 4 0.05% 0.06%
D 7851 6551 124 124 1.58% 1.89%

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 13 254 9864 51.99 877 863 173.1
A 8 192 9856 51.95 877 863 173.1
A 3 137 7684 39.4 877 863 173.1
B 3 64 223538 1370.4 869 849 162.5
B 0 189 44964 271.48 869 849 162.5
B 12 111 19314 113.63 869 849 162.5
C 14 238 137250 702.82 835 843 194.1
C 15 208 57041 289.55 835 843 194.1
C 13 61 5721 25.13 835 843 194.1
D 1 52 1045702 5338.66 831 812 195.7
D 2 250 31411 156.34 831 812 195.7
D 2 234 22638 111.51 831 812 195.7

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