ASTROSAT CZTI

Data Quality Report

Orbit 42686

Creation date: 2024-06-27T22:43:02.678317
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/AS1A05_013T01_9000005822_42686cztM0_level2.fits modeM0/AS1A05_013T01_9000005822_42686cztM0_level2_quad_clean.evt
Size (bytes)361,175,04090,432,000
Size344.4 MB 86.2 MB
Events in quadrant A3,037,070604,849
Events in quadrant B2,520,000615,779
Events in quadrant C3,102,205589,002
Events in quadrant D4,273,842536,213

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123702
B0114962
C0128482
D0166062

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5608380.677603%
B5608230.410128%
C5608190.338802%
D56082053.655492%

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 7191 5609 16 16 0.22% 0.29%
B 7191 5609 10 10 0.14% 0.18%
C 7191 5609 10 10 0.14% 0.18%
D 7191 5609 184 184 2.56% 3.28%

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 600941 4814.83 606 593 124.7
A 13 248 36396 287.14 606 593 124.7
A 15 237 31238 245.77 606 593 124.7
B 5 255 34530 287.4 604 588 118.1
B 0 229 29244 242.64 604 588 118.1
B 4 141 26069 215.76 604 588 118.1
C 8 79 283604 2039.92 587 590 138.7
C 15 214 232449 1671.2 587 590 138.7
C 14 254 163323 1172.95 587 590 138.7
D 1 47 992523 6892.2 581 561 143.9
D 2 249 431328 2992.99 581 561 143.9
D 1 52 328449 2278.18 581 561 143.9

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