ASTROSAT CZTI

Data Quality Report

Orbit 40364

Creation date: 2024-06-27T22:15:20.293007
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_056T02_9000005538_40364cztM0_level2.fits modeM0/AS1A12_056T02_9000005538_40364cztM0_level2_quad_clean.evt
Size (bytes)393,252,48094,999,680
Size375.0 MB 90.6 MB
Events in quadrant A3,810,275657,455
Events in quadrant B2,641,062674,762
Events in quadrant C3,007,841637,700
Events in quadrant D4,648,733503,388

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150663
B0118112
C0125562
D0178122

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5766851.474159%
B576680.138744%
C5766731.266042%
D576694416.371835%

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 7080 5767 67 67 0.95% 1.16%
B 7080 5767 2 2 0.03% 0.03%
C 7080 5767 68 68 0.96% 1.18%
D 7080 5767 396 396 5.59% 6.87%

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 497856 3829.05 631 620 129.9
A 6 10 427190 3284.88 631 620 129.9
A 13 248 314825 2419.59 631 620 129.9
B 4 170 40898 328.01 633 616 122.8
B 0 230 38143 305.57 633 616 122.8
B 5 255 33044 264.05 633 616 122.8
C 14 254 329414 2270.17 618 623 144.8
C 15 214 242546 1670.38 618 623 144.8
C 0 10 22282 149.54 618 623 144.8
D 12 227 1715576 12095.7 570 556 141.8
D 13 171 181357 1275.15 570 556 141.8
D 12 191 149474 1050.29 570 556 141.8

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