ASTROSAT CZTI

Data Quality Report

Orbit 50873

Creation date: 2025-02-23T00:32:19.513130
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/AS1C07_001T01_9000006450_50873cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50873cztM0_level2_quad_clean.evt
Size (bytes)487,488,96090,521,280
Size464.9 MB 86.3 MB
Events in quadrant A5,217,493567,032
Events in quadrant B3,753,627639,036
Events in quadrant C4,256,072565,131
Events in quadrant D4,324,260526,032

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0197311
B0155971
C0168861
D0172855

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63595739.010851%
B63602824.433962%
C63602493.915094%
D63593395.331027%

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 7129 6361 457 457 6.41% 7.18%
B 7130 6362 116 116 1.63% 1.82%
C 7130 6362 157 157 2.20% 2.47%
D 7129 6361 226 226 3.17% 3.55%

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 4 156 783170 4862.77 657 639 160.9
A 7 206 539888 3350.98 657 639 160.9
A 4 249 426030 2643.45 657 639 160.9
B 4 206 367893 2606.84 667 645 140.9
B 4 170 156386 1105.5 667 645 140.9
B 4 81 114798 810.29 667 645 140.9
C 5 10 465005 2598.97 658 651 178.7
C 15 229 297587 1661.94 658 651 178.7
C 10 171 255318 1425.36 658 651 178.7
D 2 249 337324 1883.69 645 620 178.7
D 2 153 231553 1291.96 645 620 178.7
D 8 48 215441 1201.82 645 620 178.7

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