ASTROSAT CZTI

Data Quality Report

Orbit 21543

Creation date: 2024-06-27T18:29:26.560243
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/AS1T03_138T08_9000003188_21543cztM0_level2.evt modeM0/AS1T03_138T08_9000003188_21543cztM0_level2_quad_clean.evt
Size (bytes)258,638,40068,630,400
Size246.7 MB 65.5 MB
Events in quadrant A1,680,037462,981
Events in quadrant B1,711,944471,568
Events in quadrant C1,725,497447,316
Events in quadrant D2,457,786430,405

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A075950
B076310
C076380
D097410

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0740
B0740
C0740
D0740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A376610.026553%
B376730.079639%
C3767100.265463%
D37671834.857977%

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 3766 3766 0 0 0.00% 0.00%
B 3767 3767 0 0 0.00% 0.00%
C 3767 3767 0 0 0.00% 0.00%
D 3767 3767 198 198 5.26% 5.26%

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 4 2 24935 279.69 427 418 87.7
A 13 254 5350 56.26 427 418 87.7
A 12 96 5337 56.12 427 418 87.7
B 0 230 22470 268.37 425 415 82.2
B 0 190 12426 146.15 425 415 82.2
B 12 111 9660 112.5 425 415 82.2
C 14 238 64670 652.36 413 416 98.5
C 0 239 34505 346.1 413 416 98.5
C 8 128 7430 71.21 413 416 98.5
D 1 52 584694 5843.49 412 400 100.0
D 14 35 140598 1402.11 412 400 100.0
D 13 153 140158 1397.71 412 400 100.0

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