ASTROSAT CZTI

Data Quality Report

Orbit 11018

Creation date: 2024-06-27T16:07:07.528663
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/AS1G08_046T09_9000001600_11018cztM0_level2.evt modeM0/AS1G08_046T09_9000001600_11018cztM0_level2_quad_clean.evt
Size (bytes)114,949,44019,523,520
Size109.6 MB 18.6 MB
Events in quadrant A1,393,81798,785
Events in quadrant B688,952139,757
Events in quadrant C514,713139,382
Events in quadrant D805,926128,487

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A079083077
B040071229
C034521120
D048721666

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021
B044
C032
D021

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03412
B03414
C03513
D03313

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A104240739.059501%
B1138534.657293%
C113970.614574%
D1112343.057554%

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 2149 1109 286 286 13.31% 25.79%
B 1542 1230 15 15 0.97% 1.22%
C 1545 1246 0 0 0.00% 0.00%
D 1544 1201 18 18 1.17% 1.50%

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 14 238 956279 41866.62 102 100 22.8
A 8 5 40371 1763.28 102 100 22.8
A 14 254 1115 44.44 102 100 22.8
B 4 239 122306 4348.87 135 131 28.1
B 0 214 13733 484.17 135 131 28.1
B 0 219 7718 270.06 135 131 28.1
C 12 4 1213 33.75 131 131 32.1
C 13 61 1012 27.48 131 131 32.1
C 5 207 368 7.39 131 131 32.1
D 8 195 124515 3784.92 128 124 32.9
D 11 129 81217 2467.47 128 124 32.9
D 2 14 35083 1063.72 128 124 32.9

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