ASTROSAT CZTI

Data Quality Report

Orbit 38837

Creation date: 2024-06-27T21:57:04.071230
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_077T06_9000005408_38837cztM0_level2.fits modeM0/AS1A12_077T06_9000005408_38837cztM0_level2_quad_clean.evt
Size (bytes)342,046,08097,260,480
Size326.2 MB 92.8 MB
Events in quadrant A2,988,284668,374
Events in quadrant B2,583,314687,318
Events in quadrant C2,732,649661,072
Events in quadrant D3,955,166566,906

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0350

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120703
B0108952
C0112242
D0152802

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5162200.387447%
B5162270.523053%
C5162180.348702%
D51623606.974041%

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 7134 5163 12 12 0.17% 0.23%
B 7134 5163 16 16 0.22% 0.31%
C 7134 5163 9 9 0.13% 0.17%
D 7134 5163 287 287 4.02% 5.56%

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 395997 3184.28 618 609 124.2
A 13 248 117364 940.29 618 609 124.2
A 9 143 67010 534.76 618 609 124.2
B 5 184 70223 589.41 620 603 118.1
B 0 230 27840 230.59 620 603 118.1
B 5 172 15034 122.17 620 603 118.1
C 15 214 212944 1487.05 615 621 142.8
C 0 10 59609 413.13 615 621 142.8
C 3 233 27885 190.95 615 621 142.8
D 2 249 578140 4027.3 585 567 143.4
D 12 235 459259 3198.36 585 567 143.4
D 13 249 205541 1429.24 585 567 143.4

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