ASTROSAT CZTI

Data Quality Report

Orbit 11156

Creation date: 2024-06-27T16:08:57.853086
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/AS1A04_058T01_9000001628_11156cztM0_level2.evt modeM0/AS1A04_058T01_9000001628_11156cztM0_level2_quad_clean.evt
Size (bytes)364,213,44064,474,560
Size347.3 MB 61.5 MB
Events in quadrant A3,015,340395,882
Events in quadrant B2,908,702402,656
Events in quadrant C2,035,594432,300
Events in quadrant D2,755,180395,616

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134841474
B0130191240
C010305796
D0131251454

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010210
B01028
C01026
D01028

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111
B0110
C0111
D0111

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4617801.732727%
B46011743.781787%
C4685200.426894%
D4622992.141930%

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 6122 4772 47 47 0.77% 0.98%
B 6122 4808 91 91 1.49% 1.89%
C 6122 4861 0 0 0.00% 0.00%
D 6122 4779 58 58 0.95% 1.21%

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 652958 6184.03 511 499 105.5
A 8 5 306626 2901.48 511 499 105.5
A 14 238 59926 563.25 511 499 105.5
B 4 239 678781 6931.67 514 501 97.9
B 15 204 59819 606.2 514 501 97.9
B 10 16 50894 514.99 514 501 97.9
C 12 4 5267 39.04 520 521 121.6
C 13 61 3886 27.68 520 521 121.6
C 14 128 1502 8.07 520 521 121.6
D 1 52 307245 2547.69 500 487 120.4
D 10 199 190238 1575.92 500 487 120.4
D 13 152 129568 1072.04 500 487 120.4

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