ASTROSAT CZTI

Data Quality Report

Orbit 39579

Creation date: 2024-06-27T22:06:23.449433
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_39579cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39579cztM0_level2_quad_clean.evt
Size (bytes)400,910,40080,133,120
Size382.3 MB 76.4 MB
Events in quadrant A3,190,360560,995
Events in quadrant B2,212,707579,822
Events in quadrant C5,894,074442,912
Events in quadrant D3,162,296499,273

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127283
B0101822
C0210212
D0130872

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4895671.368744%
B4895250.510725%
C4895111822.839632%
D48952485.066394%

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 6958 4896 53 53 0.76% 1.08%
B 6958 4896 13 13 0.19% 0.27%
C 6958 4896 963 963 13.84% 19.67%
D 6958 4896 216 216 3.10% 4.41%

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 15 222 437817 4106.33 523 512 106.5
A 10 83 401529 3765.58 523 512 106.5
A 13 248 207055 1939.45 523 512 106.5
B 5 172 121125 1207.77 526 512 99.9
B 5 255 26015 255.38 526 512 99.9
B 12 111 12529 120.33 526 512 99.9
C 9 187 2326099 21775.72 459 463 106.8
C 15 208 1561075 14612.54 459 463 106.8
C 15 214 196715 1837.57 459 463 106.8
D 12 227 1006987 8122.75 503 488 123.9
D 13 249 115500 928.18 503 488 123.9
D 1 52 63205 506.15 503 488 123.9

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