ASTROSAT CZTI

Data Quality Report

Orbit 41419

Creation date: 2024-06-27T22:28:47.552817
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_035T01_9000005666_41419cztM0_level2.fits modeM0/AS1A12_035T01_9000005666_41419cztM0_level2_quad_clean.evt
Size (bytes)328,397,76086,296,320
Size313.2 MB 82.3 MB
Events in quadrant A2,770,579580,372
Events in quadrant B2,403,948600,554
Events in quadrant C3,073,555551,100
Events in quadrant D3,503,708517,899

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113513
B0108022
C0122742
D0138542

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5188150.289129%
B5188160.308404%
C51882454.722436%
D51882043.932151%

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 9342 5190 4 4 0.04% 0.08%
B 9342 5190 7 7 0.07% 0.13%
C 9342 5190 239 239 2.56% 4.61%
D 9342 5190 181 181 1.94% 3.49%

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 511316 4261.22 577 566 119.9
A 2 79 13315 106.36 577 566 119.9
A 13 6 7289 56.09 577 566 119.9
B 0 190 94465 845.88 572 556 111.0
B 5 255 38246 339.49 572 556 111.0
B 12 111 14025 121.32 572 556 111.0
C 0 10 653925 5089.67 551 554 128.4
C 15 214 227597 1768.64 551 554 128.4
C 15 111 42864 329.59 551 554 128.4
D 2 249 518062 3718.2 563 546 139.2
D 1 47 403311 2893.75 563 546 139.2
D 12 79 217441 1558.33 563 546 139.2

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