ASTROSAT CZTI

Data Quality Report

Orbit 50799

Creation date: 2025-02-18T00:35:16.920099
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_001T01_9000006450_50799cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50799cztM0_level2_quad_clean.evt
Size (bytes)548,688,96092,079,360
Size523.3 MB 87.8 MB
Events in quadrant A3,823,344610,332
Events in quadrant B3,529,696667,961
Events in quadrant C6,334,570568,481
Events in quadrant D6,133,947500,805

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155881
B0149011
C0232961
D0225534

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63132163.421511%
B63131772.803738%
C63133715.876762%
D631378412.418818%

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 7383 6313 127 127 1.72% 2.01%
B 7383 6313 67 67 0.91% 1.06%
C 7383 6313 206 206 2.79% 3.26%
D 7382 6312 678 678 9.18% 10.74%

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 11 3 224236 1320.49 681 665 169.3
A 4 3 175710 1033.87 681 665 169.3
A 4 191 132019 775.82 681 665 169.3
B 4 206 264349 1836.32 683 658 143.6
B 5 185 122846 850.9 683 658 143.6
B 0 229 98160 678.99 683 658 143.6
C 5 10 2505304 13773.45 662 656 181.8
C 1 44 271048 1486.93 662 656 181.8
C 1 60 151689 830.55 662 656 181.8
D 15 125 801051 4534.26 636 611 176.5
D 2 249 595501 3369.88 636 611 176.5
D 1 47 561894 3179.5 636 611 176.5

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