ASTROSAT CZTI

Data Quality Report

Orbit 42917

Creation date: 2024-06-27T22:45:46.489777
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_42917cztM0_level2.fits modeM0/AS1T05_143T01_9000005830_42917cztM0_level2_quad_clean.evt
Size (bytes)999,239,040228,983,040
Size952.9 MB 218.4 MB
Events in quadrant A9,088,5731,524,904
Events in quadrant B7,907,4721,571,610
Events in quadrant C7,749,2811,510,199
Events in quadrant D11,118,0461,322,355

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0357553
B0337163
C0326733
D0433063

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02960
B02960
C02960
D02960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A145383652.510662%
B145383202.201128%
C14539720.495220%
D145399646.630442%

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 18535 14541 273 273 1.47% 1.88%
B 18535 14541 181 181 0.98% 1.24%
C 18536 14542 52 52 0.28% 0.36%
D 18536 14541 917 917 4.95% 6.31%

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 15 237 1493473 4644.33 1570 1538 321.2
A 10 83 1382757 4299.68 1570 1538 321.2
A 2 79 106674 327.28 1570 1538 321.2
B 4 81 1118424 3667.54 1567 1520 304.5
B 0 229 439673 1438.75 1567 1520 304.5
B 3 112 129583 420.52 1567 1520 304.5
C 8 79 831257 2307.96 1540 1546 359.5
C 15 214 579095 1606.54 1540 1546 359.5
C 14 254 270977 749.46 1540 1546 359.5
D 1 47 1216710 3314.0 1504 1458 366.7
D 1 52 1022636 2784.76 1504 1458 366.7
D 2 249 786035 2139.54 1504 1458 366.7

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