ASTROSAT CZTI

Data Quality Report

Orbit 41652

Creation date: 2024-06-27T22:31:11.572532
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/AS1T05_116T01_9000005682_41652cztM0_level2.fits modeM0/AS1T05_116T01_9000005682_41652cztM0_level2_quad_clean.evt
Size (bytes)317,842,56086,912,640
Size303.1 MB 82.9 MB
Events in quadrant A2,758,578582,554
Events in quadrant B2,358,227598,804
Events in quadrant C3,011,494556,048
Events in quadrant D3,217,296517,173

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115802
B0110012
C0124572
D0136022

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0250
C0250
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5383100.185770%
B5383140.260078%
C53832224.124094%
D53832204.086940%

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 7026 5384 4 4 0.06% 0.07%
B 7026 5384 2 2 0.03% 0.04%
C 7026 5384 219 219 3.12% 4.07%
D 7026 5384 197 197 2.80% 3.66%

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 518857 4433.48 573 561 116.9
A 2 79 13401 109.83 573 561 116.9
A 13 254 7358 58.14 573 561 116.9
B 0 190 41379 368.69 571 554 110.7
B 7 202 32109 284.98 571 554 110.7
B 5 255 15179 132.08 571 554 110.7
C 0 10 643884 4958.53 549 552 129.7
C 15 214 214077 1645.76 549 552 129.7
C 14 254 15157 112.57 549 552 129.7
D 13 249 754631 5591.77 550 536 134.9
D 2 249 135361 999.75 550 536 134.9
D 1 47 113492 837.59 550 536 134.9

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