ASTROSAT CZTI

Data Quality Report

Orbit 41668

Creation date: 2024-06-27T22:31:21.591660
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/AS1T05_117T01_9000005684_41668cztM0_level2.fits modeM0/AS1T05_117T01_9000005684_41668cztM0_level2_quad_clean.evt
Size (bytes)351,319,68095,532,480
Size335.0 MB 91.1 MB
Events in quadrant A3,060,540637,817
Events in quadrant B2,650,237652,557
Events in quadrant C2,927,585627,238
Events in quadrant D3,901,096557,561

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0250
C0250
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127752
B0122942
C0126472
D0160622

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A597190.150729%
B5971100.167476%
C5971661.105342%
D59713425.727684%

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 7284 5972 2 2 0.03% 0.03%
B 7284 5972 3 3 0.04% 0.05%
C 7284 5972 71 71 0.97% 1.19%
D 7284 5972 319 319 4.38% 5.34%

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 565847 4287.52 639 624 131.8
A 13 248 10422 74.32 639 624 131.8
A 2 79 9002 63.55 639 624 131.8
B 0 190 70117 560.24 637 619 124.1
B 5 255 39268 311.56 637 619 124.1
B 12 111 16254 126.04 637 619 124.1
C 15 214 243157 1666.49 625 627 145.5
C 0 10 225349 1544.12 625 627 145.5
C 14 17 9420 60.42 625 627 145.5
D 2 249 940801 6242.08 611 592 150.6
D 13 249 463399 3072.59 611 592 150.6
D 12 6 81873 539.63 611 592 150.6

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