ASTROSAT CZTI

Data Quality Report

Orbit 11087

Creation date: 2024-06-27T16:08:07.490954
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_071T02_9000001620_11087cztM0_level2.evt modeM0/AS1G08_071T02_9000001620_11087cztM0_level2_quad_clean.evt
Size (bytes)559,612,80066,430,080
Size533.7 MB 63.4 MB
Events in quadrant A3,189,638405,476
Events in quadrant B4,506,598406,496
Events in quadrant C3,036,075401,447
Events in quadrant D5,788,815358,493

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131873
B0174212
C0129272
D0213752

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6302230.364964%
B63022924.633450%
C630290.142812%
D630296615.328467%

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 7657 6303 0 0 0.00% 0.00%
B 7657 6303 174 174 2.27% 2.76%
C 7657 6303 0 0 0.00% 0.00%
D 7657 6303 894 894 11.68% 14.18%

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 8 15 41189 249.2 806 791 162.1
A 14 238 36243 218.69 806 791 162.1
A 11 29 11087 63.51 806 791 162.1
B 4 239 1135003 7504.54 805 788 151.1
B 0 214 78350 513.19 805 788 151.1
B 15 204 51171 333.36 805 788 151.1
C 13 61 5738 27.49 777 783 180.3
C 9 54 3381 14.41 777 783 180.3
C 12 4 2408 9.01 777 783 180.3
D 10 253 2679190 15801.05 700 682 169.5
D 4 95 177659 1044.02 700 682 169.5
D 1 52 102543 600.9 700 682 169.5

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