ASTROSAT CZTI

Data Quality Report

Orbit 42896

Creation date: 2024-06-27T22:45:31.939239
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/AS1T05_143T01_9000005830_42896cztM0_level2.fits modeM0/AS1T05_143T01_9000005830_42896cztM0_level2_quad_clean.evt
Size (bytes)315,504,00079,966,080
Size300.9 MB 76.3 MB
Events in quadrant A2,877,351530,938
Events in quadrant B2,100,832557,444
Events in quadrant C3,019,101525,000
Events in quadrant D3,309,305473,040

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115872
B097932
C0120943
D0131772

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0340
C0340
D0340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0960
B0960
C0960
D0960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A47771112.323634%
B4777110.230270%
C47761262.638191%
D47762645.527638%

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 6901 4778 84 84 1.22% 1.76%
B 6901 4778 5 5 0.07% 0.10%
C 6900 4777 131 131 1.90% 2.74%
D 6900 4777 276 276 4.00% 5.78%

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 525502 5116.98 500 490 102.6
A 15 237 330169 3213.19 500 490 102.6
A 12 189 42293 407.43 500 490 102.6
B 0 229 43879 443.77 507 493 97.8
B 3 112 24243 242.92 507 493 97.8
B 5 172 16094 159.57 507 493 97.8
C 15 208 260464 2236.16 496 499 116.3
C 15 214 207115 1777.26 496 499 116.3
C 14 254 195576 1678.0 496 499 116.3
D 1 52 824345 6819.75 488 473 120.8
D 12 6 320922 2652.57 488 473 120.8
D 2 16 93628 771.1 488 473 120.8

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