ASTROSAT CZTI

Data Quality Report

Orbit 42391

Creation date: 2024-06-27T22:39:45.062143
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_42391cztM0_level2.fits modeM0/AS1C06_010T01_9000005800_42391cztM0_level2_quad_clean.evt
Size (bytes)351,014,40090,155,520
Size334.8 MB 86.0 MB
Events in quadrant A3,117,553603,208
Events in quadrant B2,657,734604,107
Events in quadrant C3,118,348588,789
Events in quadrant D3,667,802545,731

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127132
B0120192
C0129192
D0148782

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5547550.991527%
B5547611.099694%
C5547891.604471%
D55461983.570141%

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 7130 5548 32 32 0.45% 0.58%
B 7130 5548 34 34 0.48% 0.61%
C 7130 5548 66 66 0.93% 1.19%
D 7129 5547 262 262 3.68% 4.72%

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 626319 5202.06 582 569 120.3
A 14 223 216660 1796.43 582 569 120.3
A 13 6 11358 89.69 582 569 120.3
B 5 172 136238 1224.07 578 562 110.8
B 5 255 97425 873.9 578 562 110.8
B 4 81 57745 515.91 578 562 110.8
C 4 254 482693 3621.03 571 573 133.1
C 15 214 229642 1720.45 571 573 133.1
C 14 254 144272 1079.27 571 573 133.1
D 2 16 527877 3762.01 572 556 140.2
D 1 52 386930 2756.46 572 556 140.2
D 12 233 161798 1150.33 572 556 140.2

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