ASTROSAT CZTI

Data Quality Report

Orbit 41313

Creation date: 2024-06-27T22:27:23.290237
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/AS1A12_025T14_9000005646_41313cztM0_level2.fits modeM0/AS1A12_025T14_9000005646_41313cztM0_level2_quad_clean.evt
Size (bytes)332,231,04085,112,640
Size316.8 MB 81.2 MB
Events in quadrant A2,770,580581,976
Events in quadrant B2,686,653598,652
Events in quadrant C3,214,623533,086
Events in quadrant D3,227,117504,865

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113123
B0113582
C0126162
D0132782

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A511950.097675%
B5119500.976753%
C51192925.704239%
D51192264.414925%

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 7002 5120 4 4 0.06% 0.08%
B 7002 5120 50 50 0.71% 0.98%
C 7002 5120 286 286 4.08% 5.59%
D 7001 5119 212 212 3.03% 4.14%

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 479241 4049.26 575 564 118.2
A 12 189 24649 203.74 575 564 118.2
A 2 79 18631 152.83 575 564 118.2
B 5 255 287436 2562.23 571 554 112.0
B 0 229 97125 862.5 571 554 112.0
B 0 245 26000 227.27 571 554 112.0
C 0 10 857435 6763.32 537 540 126.7
C 15 214 213230 1678.72 537 540 126.7
C 9 54 20624 158.52 537 540 126.7
D 2 249 765186 5661.53 544 528 135.1
D 13 249 184285 1360.53 544 528 135.1
D 5 222 86035 633.09 544 528 135.1

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