ASTROSAT CZTI

Data Quality Report

Orbit 51678

Creation date: 2025-04-22T12:01:06.599352
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/AS1A13_031T01_9000006462_51678cztM0_level2.fits modeM0/AS1A13_031T01_9000006462_51678cztM0_level2_quad_clean.evt
Size (bytes)1,522,128,960274,003,200
Size1.4 GB 261.3 MB
Events in quadrant A16,302,8001,755,359
Events in quadrant B11,473,2061,930,622
Events in quadrant C14,978,9871,633,943
Events in quadrant D12,048,1891,602,427

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0624483
B0482843
C0589033
D0506904

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04040
B04040
C04040
D04040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1993912106.068509%
B199397243.631075%
C1993917818.932243%
D199389344.684522%

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 21084 19941 894 894 4.24% 4.48%
B 21084 19939 332 332 1.57% 1.67%
C 21084 19940 1498 1498 7.10% 7.51%
D 21083 19941 672 672 3.19% 3.37%

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 7 64 3598330 7008.05 2087 2035 513.2
A 12 3 1828746 3559.69 2087 2035 513.2
A 12 250 558591 1084.55 2087 2035 513.2
B 6 51 659960 1475.3 2095 2017 446.0
B 1 207 359088 800.66 2095 2017 446.0
B 0 213 281632 626.98 2095 2017 446.0
C 15 189 1967760 3557.31 2017 2002 552.6
C 13 3 1365818 2468.01 2017 2002 552.6
C 15 147 1070946 1934.4 2017 2002 552.6
D 8 176 889481 1573.99 2027 1955 563.9
D 7 126 527537 932.1 2027 1955 563.9
D 7 60 489804 865.18 2027 1955 563.9

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