ASTROSAT CZTI

Data Quality Report

Orbit 49755

Creation date: 2024-12-09T17:27:16.680788
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_037T01_9000006440_49755cztM0_level2.fits modeM0/AS1A13_037T01_9000006440_49755cztM0_level2_quad_clean.evt
Size (bytes)1,255,429,44043,787,520
Size1.2 GB 41.8 MB
Events in quadrant A15,467,03662,393
Events in quadrant B5,171,935635,625
Events in quadrant C10,653,029694
Events in quadrant D14,680,968176,365

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0502598
B0197611
C0361341
D0480421

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6460601893.157895%
B64605238.095975%
C6461645899.953568%
D6461471472.960842%

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 7200 6460 5913 5913 82.12% 91.53%
B 7200 6460 316 316 4.39% 4.89%
C 7200 6460 1157 1157 16.07% 17.91%
D 7201 6462 4699 4699 65.25% 72.72%

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 6598732 54784.79 435 422 120.4
A 7 64 1275398 10585.94 435 422 120.4
A 3 99 1037826 8613.41 435 422 120.4
B 10 28 750250 5067.48 687 666 147.9
B 4 206 447312 3019.5 687 666 147.9
B 4 21 322392 2174.99 687 666 147.9
C 15 180 4520229 153173.75 73 70 29.5
C 15 190 1474245 49955.08 73 70 29.5
C 15 163 923576 31294.67 73 70 29.5
D 12 6 2474087 16755.75 461 440 147.6
D 15 168 2389957 16185.88 461 440 147.6
D 15 185 1934257 13099.1 461 440 147.6

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