ASTROSAT CZTI

Data Quality Report

Orbit 40754

Creation date: 2024-06-27T22:20:02.072405
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_068T02_9000005564_40754cztM0_level2.fits modeM0/AS1A12_068T02_9000005564_40754cztM0_level2_quad_clean.evt
Size (bytes)410,564,16086,520,960
Size391.5 MB 82.5 MB
Events in quadrant A2,891,248599,298
Events in quadrant B2,484,935622,877
Events in quadrant C6,664,931502,549
Events in quadrant D2,726,698508,663

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117843
B0111752
C0235102
D0119912

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A552080.144928%
B552060.108696%
C5520110920.090580%
D55204057.336957%

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 7104 5521 4 4 0.06% 0.07%
B 7104 5521 0 0 0.00% 0.00%
C 7104 5521 1172 1172 16.50% 21.23%
D 7104 5521 33 33 0.46% 0.60%

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 479251 3832.06 610 599 124.9
A 6 10 23570 183.9 610 599 124.9
A 12 189 21965 171.05 610 599 124.9
B 0 229 65121 539.11 607 589 119.7
B 12 111 15488 124.47 607 589 119.7
B 11 111 14378 115.2 607 589 119.7
C 9 187 4110254 31609.28 556 559 130.0
C 15 214 225625 1731.07 556 559 130.0
C 0 10 102270 782.3 556 559 130.0
D 2 249 200188 1412.39 570 555 141.3
D 12 191 151664 1069.09 570 555 141.3
D 2 250 79194 556.36 570 555 141.3

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