ASTROSAT CZTI

Data Quality Report

Orbit 48463

Creation date: 2024-09-14T10:52:33.937700
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/AS1A13_029T01_9000006426_48463cztM0_level2.fits modeM0/AS1A13_029T01_9000006426_48463cztM0_level2_quad_clean.evt
Size (bytes)443,926,080101,672,640
Size423.4 MB 97.0 MB
Events in quadrant A6,500,943668,155
Events in quadrant B3,277,041691,752
Events in quadrant C2,846,561670,072
Events in quadrant D3,311,731602,785

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0245331
B0142751
C0131871
D0144761

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63902724.256651%
B63912123.317165%
C6391921.439524%
D63911953.051166%

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 7245 6390 0 0 0.00% 0.00%
B 7246 6391 46 46 0.63% 0.72%
C 7246 6392 2 2 0.03% 0.03%
D 7246 6391 84 84 1.16% 1.31%

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 10 83 3732511 24974.2 713 698 149.4
A 13 254 12042 75.92 713 698 149.4
A 3 137 8596 52.86 713 698 149.4
B 12 16 330804 2329.47 708 685 141.7
B 5 255 51030 355.26 708 685 141.7
B 8 234 31739 219.13 708 685 141.7
C 12 2 34397 200.94 708 709 167.7
C 12 249 15596 88.8 708 709 167.7
C 14 254 13027 73.47 708 709 167.7
D 12 233 159176 895.7 710 689 176.9
D 10 199 114302 642.09 710 689 176.9
D 12 2 110098 618.33 710 689 176.9

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