ASTROSAT CZTI

Data Quality Report

Orbit 41906

Creation date: 2024-06-27T22:34:13.692951
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_099T01_9000005716_41906cztM0_level2.fits modeM0/AS1A12_099T01_9000005716_41906cztM0_level2_quad_clean.evt
Size (bytes)450,319,68086,869,440
Size429.5 MB 82.8 MB
Events in quadrant A3,248,283606,116
Events in quadrant B2,484,302630,642
Events in quadrant C3,270,764565,667
Events in quadrant D7,237,073441,648

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130632
B0113332
C0130872
D0253162

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5519500.905961%
B5519170.308027%
C55192744.964668%
D5519123022.286646%

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 7251 5520 38 38 0.52% 0.69%
B 7251 5520 11 11 0.15% 0.20%
C 7251 5520 271 271 3.74% 4.91%
D 7251 5520 1312 1312 18.09% 23.77%

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 540721 4396.93 595 583 122.8
A 14 24 402181 3269.16 595 583 122.8
A 3 137 6739 50.11 595 583 122.8
B 5 255 103722 885.44 598 581 116.5
B 12 111 15044 124.16 598 581 116.5
B 14 111 13634 112.06 598 581 116.5
C 0 10 814925 6086.59 570 572 133.8
C 15 214 213351 1590.34 570 572 133.8
C 0 15 19094 138.44 570 572 133.8
D 12 79 4525450 34670.96 528 513 130.5
D 5 222 203694 1556.81 528 513 130.5
D 12 6 201525 1540.19 528 513 130.5

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