ASTROSAT CZTI

Data Quality Report

Orbit 39506

Creation date: 2024-06-27T22:05:28.207621
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_018T01_9000005488_39506cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39506cztM0_level2_quad_clean.evt
Size (bytes)340,482,24088,398,720
Size324.7 MB 84.3 MB
Events in quadrant A2,642,748603,756
Events in quadrant B2,297,930626,396
Events in quadrant C4,071,867549,408
Events in quadrant D3,186,686534,290

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111903
B0106192
C0154982
D0133262

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0390

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5185110.212150%
B518580.154291%
C51855119.855352%
D51852114.069431%

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 7306 5186 4 4 0.05% 0.08%
B 7306 5186 2 2 0.03% 0.04%
C 7306 5186 444 444 6.08% 8.56%
D 7306 5186 190 190 2.60% 3.66%

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 422125 3737.08 558 549 112.8
A 15 222 37667 329.03 558 549 112.8
A 13 254 7773 64.04 558 549 112.8
B 5 172 83125 772.8 561 546 106.9
B 12 111 13422 120.5 561 546 106.9
B 11 111 12166 108.74 561 546 106.9
C 9 187 1763085 14341.93 527 530 122.9
C 15 214 210263 1706.6 527 530 122.9
C 15 208 27860 222.38 527 530 122.9
D 2 249 467395 3571.3 537 522 130.7
D 12 227 335120 2559.48 537 522 130.7
D 13 249 283486 2164.51 537 522 130.7

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