ASTROSAT CZTI

Data Quality Report

Orbit 00804

Creation date: 2024-06-27T14:03:10.322518
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/AS1P01_010T01_9000000112_00804cztM0_level2.evt modeM0/AS1P01_010T01_9000000112_00804cztM0_level2_quad_clean.evt
Size (bytes)1,074,049,920101,773,440
Size1.0 GB 97.1 MB
Events in quadrant A8,090,761660,936
Events in quadrant B8,634,673654,888
Events in quadrant C7,867,687649,398
Events in quadrant D7,473,357632,987

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0289410
B0305580
C0283560
D0272010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6950570.820144%
B6951731.050209%
C6951580.834412%
D69511442.071644%

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 7515 6951 207 207 2.75% 2.98%
B 7516 6952 262 262 3.49% 3.77%
C 7516 6952 196 196 2.61% 2.82%
D 7516 6953 244 244 3.25% 3.51%

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 14 79 80318 155.55 2078 2094 502.9
A 0 214 13313 22.31 2078 2094 502.9
A 15 233 13260 22.2 2078 2094 502.9
B 5 191 77958 147.01 2193 2200 515.3
B 0 23 74360 140.02 2193 2200 515.3
B 15 22 49002 90.82 2193 2200 515.3
C 15 241 52422 92.05 1954 2018 547.6
C 3 111 41960 72.94 1954 2018 547.6
C 3 79 40314 69.94 1954 2018 547.6
D 13 25 244158 412.14 1874 1936 587.7
D 12 188 110096 184.04 1874 1936 587.7
D 1 4 47961 78.31 1874 1936 587.7

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