ASTROSAT CZTI

Data Quality Report

Orbit 24946

Creation date: 2024-06-27T19:11:47.904442
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/AS1T03_200T01_9000003654_24946cztM0_level2.evt modeM0/AS1T03_200T01_9000003654_24946cztM0_level2_quad_clean.evt
Size (bytes)501,088,320121,250,880
Size477.9 MB 115.6 MB
Events in quadrant A3,003,233825,359
Events in quadrant B3,209,202835,406
Events in quadrant C4,352,070779,918
Events in quadrant D4,164,123772,439

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133861
B0138571
C0173861
D0170231

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6583821.245633%
B6584961.458080%
C65841682.551640%
D65841372.080802%

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 6963 6584 0 0 0.00% 0.00%
B 6964 6585 12 12 0.17% 0.18%
C 6964 6585 2 2 0.03% 0.03%
D 6964 6585 41 41 0.59% 0.62%

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 13 254 11863 70.35 776 757 157.9
A 3 137 6832 38.48 776 757 157.9
A 0 226 6811 38.35 776 757 157.9
B 4 80 78128 525.71 770 749 147.2
B 15 33 47149 315.24 770 749 147.2
B 12 111 17709 115.22 770 749 147.2
C 7 247 1290783 7448.87 741 743 173.2
C 14 238 118512 680.01 741 743 173.2
C 9 54 34383 194.24 741 743 173.2
D 1 3 600776 3293.48 753 732 182.2
D 8 195 453922 2487.44 753 732 182.2
D 7 238 88302 480.65 753 732 182.2

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