ASTROSAT CZTI

Data Quality Report

Orbit 41754

Creation date: 2024-06-27T22:32:27.595122
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_077T11_9000005696_41754cztM0_level2.fits modeM0/AS1A12_077T11_9000005696_41754cztM0_level2_quad_clean.evt
Size (bytes)463,749,12090,155,520
Size442.3 MB 86.0 MB
Events in quadrant A3,190,998614,099
Events in quadrant B3,100,908618,816
Events in quadrant C3,335,799569,502
Events in quadrant D7,105,434536,327

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0280
C0280
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129522
B0131802
C0132832
D0250103

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5588571.020043%
B55881162.075877%
C55882524.509664%
D55873265.834974%

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 7050 5589 47 47 0.67% 0.84%
B 7049 5588 43 43 0.61% 0.77%
C 7049 5587 246 246 3.49% 4.40%
D 7048 5586 594 594 8.43% 10.63%

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 556460 4380.78 614 603 126.9
A 13 248 239474 1882.57 614 603 126.9
A 13 6 10658 79.24 614 603 126.9
B 5 255 449979 3805.74 605 589 118.1
B 0 186 95483 803.63 605 589 118.1
B 4 141 93758 789.02 605 589 118.1
C 0 10 853819 6284.43 575 578 135.8
C 15 214 234723 1724.56 575 578 135.8
C 13 61 3781 23.59 575 578 135.8
D 12 79 4427046 30445.56 586 570 145.4
D 12 6 165100 1131.65 586 570 145.4
D 2 249 114809 785.74 586 570 145.4

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