ASTROSAT CZTI

Data Quality Report

Orbit 38506

Creation date: 2024-06-27T21:53:39.617621
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_018T01_9000005386_38506cztM0_level2.fits modeM0/AS1A12_018T01_9000005386_38506cztM0_level2_quad_clean.evt
Size (bytes)336,882,24091,126,080
Size321.3 MB 86.9 MB
Events in quadrant A2,733,919641,648
Events in quadrant B3,724,629621,300
Events in quadrant C2,483,299600,978
Events in quadrant D3,150,454555,064

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109633
B0142012
C0101002
D0124542

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4854200.412031%
B48543066.304079%
C4854110.226617%
D48541463.007829%

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 7006 4855 6 6 0.09% 0.12%
B 7006 4855 260 260 3.71% 5.36%
C 7006 4855 9 9 0.13% 0.19%
D 7006 4855 128 128 1.83% 2.64%

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 380648 3285.42 581 571 115.7
A 12 189 40400 344.29 581 571 115.7
A 9 143 29953 253.98 581 571 115.7
B 8 3 1459920 13969.85 560 548 104.5
B 0 213 18641 173.2 560 548 104.5
B 12 111 12571 115.09 560 548 104.5
C 15 214 205218 1596.37 557 562 128.2
C 14 254 64913 501.96 557 562 128.2
C 0 10 28523 218.1 557 562 128.2
D 13 249 276658 2074.65 559 545 133.1
D 2 250 241477 1810.31 559 545 133.1
D 12 233 201108 1506.98 559 545 133.1

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