ASTROSAT CZTI

Data Quality Report

Orbit 42570

Creation date: 2024-06-27T22:41:45.170696
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/AS1C07_001T10_9000005814_42570cztM0_level2.fits modeM0/AS1C07_001T10_9000005814_42570cztM0_level2_quad_clean.evt
Size (bytes)319,443,84091,679,040
Size304.6 MB 87.4 MB
Events in quadrant A3,044,926610,221
Events in quadrant B2,480,743616,844
Events in quadrant C2,628,694599,696
Events in quadrant D3,227,016551,460

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127172
B0116362
C0116292
D0137152

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0270
C0270
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5686260.457263%
B5686160.281393%
C5686150.263806%
D56861442.532536%

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 7239 5687 18 18 0.25% 0.32%
B 7239 5687 7 7 0.10% 0.12%
C 7239 5687 9 9 0.12% 0.16%
D 7239 5687 122 122 1.69% 2.15%

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 581776 4681.29 604 591 124.2
A 2 79 74910 598.62 604 591 124.2
A 13 248 16856 131.01 604 591 124.2
B 5 172 61960 528.79 600 583 116.1
B 0 245 22444 188.34 600 583 116.1
B 12 111 14821 122.67 600 583 116.1
C 15 214 233550 1680.46 592 595 138.6
C 9 54 30911 218.69 592 595 138.6
C 5 250 28957 204.59 592 595 138.6
D 12 6 255002 1755.65 588 569 144.9
D 1 52 248203 1708.74 588 569 144.9
D 13 249 160589 1104.18 588 569 144.9

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