ASTROSAT CZTI

Data Quality Report

Orbit 41863

Creation date: 2024-06-27T22:33:46.055131
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/AS1C07_001T11_9000005710_41863cztM0_level2.fits modeM0/AS1C07_001T11_9000005710_41863cztM0_level2_quad_clean.evt
Size (bytes)429,842,88089,112,960
Size409.9 MB 85.0 MB
Events in quadrant A4,266,573582,331
Events in quadrant B2,633,097628,055
Events in quadrant C3,129,412581,670
Events in quadrant D5,450,137517,215

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163542
B0118142
C0130302
D0200492

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0250
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A55563586.443485%
B5556100.179986%
C55562394.301656%
D555657910.421166%

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 7347 5557 236 236 3.21% 4.25%
B 7347 5557 8 8 0.11% 0.14%
C 7347 5557 244 244 3.32% 4.39%
D 7347 5557 596 596 8.11% 10.73%

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 14 24 1454466 12185.48 581 567 119.3
A 10 83 545300 4565.54 581 567 119.3
A 2 79 17814 144.55 581 567 119.3
B 5 255 104551 913.48 593 578 113.8
B 7 202 104054 909.12 593 578 113.8
B 0 245 43104 373.62 593 578 113.8
C 0 10 690635 5273.89 562 566 130.8
C 15 214 220663 1682.1 562 566 130.8
C 9 237 10393 75.1 562 566 130.8
D 12 79 1729643 12622.5 557 541 137.0
D 1 47 503135 3668.95 557 541 137.0
D 13 249 427215 3114.73 557 541 137.0

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