ASTROSAT CZTI

Data Quality Report

Orbit 42371

Creation date: 2024-06-27T22:39:30.797712
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/AS1C06_010T01_9000005800_42371cztM0_level2.fits modeM0/AS1C06_010T01_9000005800_42371cztM0_level2_quad_clean.evt
Size (bytes)333,950,40090,017,280
Size318.5 MB 85.8 MB
Events in quadrant A3,070,831613,359
Events in quadrant B2,736,230616,752
Events in quadrant C2,554,887591,359
Events in quadrant D3,593,009538,742

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0270
C0270
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121172
B0115362
C0107712
D0141932

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5221621.187512%
B5221651.244972%
C522150.095767%
D52212214.232906%

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 7133 5222 41 41 0.57% 0.79%
B 7133 5222 43 43 0.60% 0.82%
C 7133 5222 4 4 0.06% 0.08%
D 7133 5222 179 179 2.51% 3.43%

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 585534 4945.69 584 573 118.3
A 13 248 192426 1622.07 584 573 118.3
A 7 3 14452 117.34 584 573 118.3
B 5 255 123561 1132.51 570 556 108.6
B 5 172 106005 970.87 570 556 108.6
B 0 230 52281 476.23 570 556 108.6
C 15 214 225257 1730.12 561 563 129.9
C 8 79 52622 400.85 561 563 129.9
C 7 220 52478 399.74 561 563 129.9
D 10 118 276210 2017.14 562 544 136.7
D 1 47 225299 1644.61 562 544 136.7
D 10 199 221231 1614.84 562 544 136.7

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