ASTROSAT CZTI

Data Quality Report

Orbit 38728

Creation date: 2024-06-27T21:55:41.426245
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_054T01_9000005392_38728cztM0_level2.fits modeM0/AS1A12_054T01_9000005392_38728cztM0_level2_quad_clean.evt
Size (bytes)575,804,16089,657,280
Size549.1 MB 85.5 MB
Events in quadrant A3,447,903662,078
Events in quadrant B2,750,304673,486
Events in quadrant C2,833,772638,898
Events in quadrant D11,819,673324,316

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138153
B0121702
C0120402
D0391522

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5951871.461939%
B5951240.403294%
C595170.117627%
D5951336956.612334%

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 7262 5952 54 54 0.74% 0.91%
B 7262 5952 13 13 0.18% 0.22%
C 7262 5952 2 2 0.03% 0.03%
D 7262 5952 2816 2816 38.78% 47.31%

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 423287 3095.39 671 656 136.5
A 13 248 323362 2363.53 671 656 136.5
A 0 8 67263 487.84 671 656 136.5
B 5 172 69905 530.83 666 647 130.5
B 0 230 20636 153.2 666 647 130.5
B 12 111 16585 122.15 666 647 130.5
C 15 214 245974 1597.29 653 657 153.6
C 15 208 22194 140.23 653 657 153.6
C 0 10 13200 81.67 653 657 153.6
D 2 16 7845262 58768.19 546 530 133.5
D 12 235 896909 6715.15 546 530 133.5
D 12 6 381225 2851.95 546 530 133.5

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