ASTROSAT CZTI

Data Quality Report

Orbit 26359

Creation date: 2024-06-27T19:27:51.404389
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/AS1A09_088T01_9000003808_26359cztM0_level2.evt modeM0/AS1A09_088T01_9000003808_26359cztM0_level2_quad_clean.evt
Size (bytes)556,372,800123,318,720
Size530.6 MB 117.6 MB
Events in quadrant A3,198,460843,734
Events in quadrant B3,200,716878,704
Events in quadrant C3,451,565834,400
Events in quadrant D6,585,139751,405

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133080
B0133210
C0139630
D0237030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6110500.818331%
B6111420.687285%
C61111081.767305%
D6110100516.448445%

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 7485 6111 9 9 0.12% 0.15%
B 7486 6111 1 1 0.01% 0.02%
C 7486 6112 14 14 0.19% 0.23%
D 7485 6111 770 770 10.29% 12.60%

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 13 117040 733.95 798 783 158.4
A 13 254 10073 58.65 798 783 158.4
A 0 226 6913 38.7 798 783 158.4
B 0 230 37939 250.31 805 786 148.4
B 12 32 20555 133.19 805 786 148.4
B 12 111 17421 112.08 805 786 148.4
C 3 233 192631 1065.83 781 791 180.0
C 14 238 127422 703.54 781 791 180.0
C 4 254 65241 358.07 781 791 180.0
D 7 80 3136313 18223.79 732 716 172.1
D 1 52 557245 3234.49 732 716 172.1
D 2 120 49283 282.27 732 716 172.1

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