ASTROSAT CZTI

Data Quality Report

Orbit 20098

Creation date: 2024-06-27T18:11:16.254315
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/AS1A05_180T01_9000002992_20098cztM0_level2.evt modeM0/AS1A05_180T01_9000002992_20098cztM0_level2_quad_clean.evt
Size (bytes)1,034,542,080160,562,880
Size986.6 MB 153.1 MB
Events in quadrant A7,421,4511,028,757
Events in quadrant B6,959,5051,050,284
Events in quadrant C5,603,1271,019,123
Events in quadrant D10,555,510953,873

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0297953
B0285713
C0243173
D0394147

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02380
B02380
C02380
D02380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A117156315.386257%
B117152552.176697%
C117151581.348698%
D11714193716.535769%

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 12845 11717 379 379 2.95% 3.23%
B 12845 11717 22 22 0.17% 0.19%
C 12845 11717 0 0 0.00% 0.00%
D 12844 11716 1723 1723 13.41% 14.71%

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 1242569 4355.65 1417 1390 285.0
A 14 254 672489 2355.08 1417 1390 285.0
A 9 143 51294 175.13 1417 1390 285.0
B 10 245 1217882 4467.21 1424 1388 272.3
B 4 80 72293 260.38 1424 1388 272.3
B 0 198 34663 122.19 1424 1388 272.3
C 14 238 215725 662.45 1380 1394 323.5
C 3 233 12757 35.12 1380 1394 323.5
C 13 61 9670 25.58 1380 1394 323.5
D 1 52 5007669 16244.96 1263 1229 308.2
D 12 218 531816 1721.65 1263 1229 308.2
D 2 184 203357 655.87 1263 1229 308.2

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