ASTROSAT CZTI

Data Quality Report

Orbit 38678

Creation date: 2024-06-27T21:54:59.803959
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_38678cztM0_level2.fits modeM0/AS1A12_054T01_9000005392_38678cztM0_level2_quad_clean.evt
Size (bytes)341,614,08097,554,240
Size325.8 MB 93.0 MB
Events in quadrant A2,952,438667,135
Events in quadrant B2,895,217689,571
Events in quadrant C2,851,185646,789
Events in quadrant D3,530,632576,218

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120283
B0120172
C0116562
D0141532

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5343300.561482%
B5343280.524050%
C5343300.561482%
D53432033.799364%

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 7346 5344 18 18 0.25% 0.34%
B 7346 5344 12 12 0.16% 0.22%
C 7346 5344 38 38 0.52% 0.71%
D 7346 5344 173 173 2.36% 3.24%

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 397679 3184.28 622 611 124.7
A 13 248 111684 890.75 622 611 124.7
A 15 174 23817 186.1 622 611 124.7
B 4 251 356753 3036.48 620 605 117.3
B 4 171 38156 320.16 620 605 117.3
B 15 85 18712 154.38 620 605 117.3
C 15 214 218120 1550.8 604 606 140.3
C 3 110 129139 916.4 604 606 140.3
C 15 208 116001 822.73 604 606 140.3
D 10 118 620885 4340.19 588 570 142.9
D 12 227 192905 1345.72 588 570 142.9
D 13 249 102798 715.26 588 570 142.9

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