ASTROSAT CZTI

Data Quality Report

Orbit 37058

Creation date: 2024-06-27T21:34:43.489160
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/AS1A11_046T02_9000005274_37058cztM0_level2.evt modeM0/AS1A11_046T02_9000005274_37058cztM0_level2_quad_clean.evt
Size (bytes)530,671,68065,931,840
Size506.1 MB 62.9 MB
Events in quadrant A2,713,378431,017
Events in quadrant B3,529,547425,592
Events in quadrant C3,472,335418,904
Events in quadrant D6,031,121383,355

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110663
B0136392
C0134662
D0212892

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4807120.249636%
B48072695.596006%
C48072144.451841%
D480775415.685459%

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 6959 4808 4 4 0.06% 0.08%
B 6959 4808 186 186 2.67% 3.87%
C 6959 4808 176 176 2.53% 3.66%
D 6959 4808 667 667 9.58% 13.87%

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 250249 1972.74 629 618 126.5
A 7 3 16048 121.94 629 618 126.5
A 7 16 8915 65.57 629 618 126.5
B 5 172 497935 4339.29 611 597 114.6
B 5 184 461291 4019.57 611 597 114.6
B 15 85 61285 529.51 611 597 114.6
C 1 23 518352 3713.51 604 609 139.4
C 0 10 251639 1800.51 604 609 139.4
C 15 214 202859 1450.64 604 609 139.4
D 6 112 1892701 13320.2 587 573 142.0
D 1 52 775984 5458.74 587 573 142.0
D 12 17 420656 2957.3 587 573 142.0

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