ASTROSAT CZTI

Data Quality Report

Orbit 51373

Creation date: 2025-03-28T18:41:54.436370
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_001T03_9000006456_51373cztM0_level2.fits modeM0/AS1C07_001T03_9000006456_51373cztM0_level2_quad_clean.evt
Size (bytes)2,308,648,320191,931,840
Size2.2 GB 183.0 MB
Events in quadrant A15,889,6721,568,809
Events in quadrant B11,559,2611,738,687
Events in quadrant C32,872,96799,187
Events in quadrant D23,712,7911,135,740

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03762
B03751
C03744
D03764

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060629581
B047442241
C01116061205
D083681492

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0122
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1837813607.400152%
B1843511086.010306%
C183621740894.804488%
D18393506427.532213%

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 19965 18446 785 785 3.93% 4.26%
B 19965 18476 506 506 2.53% 2.74%
C 19964 18412 5296 5296 26.53% 28.76%
D 19964 18454 4400 4400 22.04% 23.84%

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 12 3 3727843 8070.91 1886 1839 461.7
A 15 174 1556237 3366.99 1886 1839 461.7
A 12 250 677889 1464.39 1886 1839 461.7
B 5 185 1520169 3760.71 1890 1818 403.7
B 0 171 699660 1728.44 1890 1818 403.7
B 4 206 382618 943.18 1890 1818 403.7
C 15 179 27504009 262712.43 378 375 104.7
C 4 12 2759235 26352.4 378 375 104.7
C 0 177 584064 5575.35 378 375 104.7
D 11 176 7522552 16427.61 1632 1571 457.8
D 7 60 4916140 10734.58 1632 1571 457.8
D 7 126 1879324 4101.46 1632 1571 457.8

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