ASTROSAT CZTI

Data Quality Report

Orbit 44948

Creation date: 2024-06-27T23:08:17.838635
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/AS1A13_017T02_9000006032_44948cztM0_level2.fits modeM0/AS1A13_017T02_9000006032_44948cztM0_level2_quad_clean.evt
Size (bytes)431,426,880100,134,720
Size411.4 MB 95.5 MB
Events in quadrant A4,807,323662,497
Events in quadrant B3,491,546683,586
Events in quadrant C2,735,195670,478
Events in quadrant D4,456,287584,280

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190351
B0145861
C0125691
D0174311

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6173961.555160%
B61731832.964523%
C6174320.518303%
D61743475.620343%

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 7148 6174 2 2 0.03% 0.03%
B 7148 6174 74 74 1.04% 1.20%
C 7149 6175 1 1 0.01% 0.02%
D 7149 6175 258 258 3.61% 4.18%

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 10 83 2087309 14323.66 695 680 145.7
A 7 3 25487 170.29 695 680 145.7
A 3 137 7844 49.18 695 680 145.7
B 5 172 303395 2210.54 688 668 136.9
B 4 171 243758 1775.07 688 668 136.9
B 5 255 64784 468.18 688 668 136.9
C 1 3 19748 117.21 686 690 162.6
C 0 207 19182 113.73 686 690 162.6
C 3 233 14330 83.89 686 690 162.6
D 13 249 845084 4994.45 670 651 169.1
D 1 52 315789 1863.9 670 651 169.1
D 5 235 177376 1045.25 670 651 169.1

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