ASTROSAT CZTI

Data Quality Report

Orbit 42675

Creation date: 2024-06-27T22:42:54.492142
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/AS1A05_013T01_9000005822_42675cztM0_level2.fits modeM0/AS1A05_013T01_9000005822_42675cztM0_level2_quad_clean.evt
Size (bytes)313,200,00088,505,280
Size298.7 MB 84.4 MB
Events in quadrant A2,842,211603,706
Events in quadrant B3,086,530609,886
Events in quadrant C2,510,880578,681
Events in quadrant D2,755,086529,198

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114192
B0124572
C0104262
D0119032

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0350
C0350
D0350

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5120180.351562%
B5120901.757812%
C512040.078125%
D5120901.757812%

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 7003 5121 11 11 0.16% 0.21%
B 7003 5121 56 56 0.80% 1.09%
C 7003 5121 0 0 0.00% 0.00%
D 7003 5121 89 89 1.27% 1.74%

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 537020 4510.95 579 567 118.9
A 15 237 34357 284.13 579 567 118.9
A 15 223 21359 174.84 579 567 118.9
B 0 245 664392 6006.6 575 560 110.5
B 10 246 96293 866.23 575 560 110.5
B 5 255 18057 158.32 575 560 110.5
C 15 214 220471 1684.19 562 567 130.6
C 3 233 35230 265.48 562 567 130.6
C 8 79 34478 259.72 562 567 130.6
D 2 249 411557 3053.28 555 540 134.6
D 1 52 70502 519.72 555 540 134.6
D 1 47 65275 480.89 555 540 134.6

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