ASTROSAT CZTI

Data Quality Report

Orbit 39496

Creation date: 2024-06-27T22:05:21.334583
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/AS1A12_018T01_9000005488_39496cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39496cztM0_level2_quad_clean.evt
Size (bytes)4,374,720532,800
Size4.2 MB 520.3 KB
Events in quadrant A45,266529
Events in quadrant B33,959490
Events in quadrant C35,891477
Events in quadrant D36,438470

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01891
B01660
C01660
D01730

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8300.000000%
B8300.000000%
C8300.000000%
D8300.000000%

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 83 83 0 0 0.00% 0.00%
B 83 83 0 0 0.00% 0.00%
C 83 83 0 0 0.00% 0.00%
D 83 83 0 0 0.00% 0.00%

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 6 10 5048 1470.83 8 8 3.4
A 10 83 4595 1338.63 8 8 3.4
A 2 79 2152 625.68 8 8 3.4
B 5 172 440 130.15 8 8 3.3
B 12 111 204 59.05 8 8 3.3
B 11 111 190 54.83 8 8 3.3
C 15 214 3339 984.75 8 8 3.4
C 3 233 279 80.12 8 8 3.4
C 15 208 75 19.81 8 8 3.4
D 13 249 1564 441.22 8 7 3.5
D 2 249 1208 340.34 8 7 3.5
D 12 233 1125 316.82 8 7 3.5

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