ASTROSAT CZTI

Data Quality Report

Orbit 40169

Creation date: 2024-06-27T22:13:23.407531
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_068T01_9000005526_40169cztM0_level2.fits modeM0/AS1A12_068T01_9000005526_40169cztM0_level2_quad_clean.evt
Size (bytes)377,665,92090,383,040
Size360.2 MB 86.2 MB
Events in quadrant A3,243,385598,055
Events in quadrant B2,783,280636,094
Events in quadrant C4,455,898589,168
Events in quadrant D3,097,231553,936

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0370

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127543
B0116712
C0167282
D0127772

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A51412124.123711%
B51411172.275822%
C51413707.197043%
D51411883.656876%

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 7053 5142 166 166 2.35% 3.23%
B 7052 5140 75 75 1.06% 1.46%
C 7052 5140 389 389 5.52% 7.57%
D 7052 5140 177 177 2.51% 3.44%

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 445184 3747.55 587 576 118.6
A 13 248 441755 3718.65 587 576 118.6
A 15 223 40785 338.92 587 576 118.6
B 5 172 189288 1661.75 594 581 113.6
B 5 255 161625 1418.15 594 581 113.6
B 4 171 38790 336.47 594 581 113.6
C 9 187 1892114 13946.37 580 585 135.6
C 15 214 213064 1566.62 580 585 135.6
C 0 10 45329 329.9 580 585 135.6
D 1 47 234137 1639.16 581 567 142.5
D 13 249 210470 1473.06 581 567 142.5
D 9 19 138384 967.18 581 567 142.5

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