ASTROSAT CZTI

Data Quality Report

Orbit 41153

Creation date: 2024-06-27T22:25:07.119514
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_025T12_9000005604_41153cztM0_level2.fits modeM0/AS1A12_025T12_9000005604_41153cztM0_level2_quad_clean.evt
Size (bytes)367,021,44088,617,600
Size350.0 MB 84.5 MB
Events in quadrant A2,847,723608,468
Events in quadrant B4,426,694581,065
Events in quadrant C3,406,034582,980
Events in quadrant D2,498,471544,669

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114573
B0166032
C0134562
D0112232

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5230100.191205%
B52304829.216061%
C5230520.994264%
D5230280.535373%

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 7021 5231 3 3 0.04% 0.06%
B 7021 5231 382 382 5.44% 7.30%
C 7021 5231 39 39 0.56% 0.75%
D 7021 5231 21 21 0.30% 0.40%

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 491799 3982.32 599 586 123.3
A 2 79 28481 226.15 599 586 123.3
A 13 254 8932 67.66 599 586 123.3
B 7 202 2035661 18327.7 571 554 111.0
B 5 255 87440 782.48 571 554 111.0
B 0 245 34180 302.83 571 554 111.0
C 9 54 771969 5667.25 579 581 136.1
C 15 214 228590 1675.14 579 581 136.1
C 0 10 114664 838.15 579 581 136.1
D 2 16 116775 806.45 578 561 144.1
D 2 249 61743 424.56 578 561 144.1
D 13 249 60300 414.55 578 561 144.1

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