ASTROSAT CZTI

Data Quality Report

Orbit 07567

Creation date: 2024-06-27T15:21:06.440175
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/AS1A02_024T01_9000001044_07567cztM0_level2.evt modeM0/AS1A02_024T01_9000001044_07567cztM0_level2_quad_clean.evt
Size (bytes)625,455,36087,644,160
Size596.5 MB 83.6 MB
Events in quadrant A4,326,276526,020
Events in quadrant B3,963,442531,377
Events in quadrant C5,100,004520,707
Events in quadrant D4,991,138500,626

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01722
C01724
D01722

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018476189
B017389162
C021291128
D020769195

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A82581601.937515%
B8271560.677064%
C8282520.627868%
D82652322.807018%

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 38045 8336 92 92 0.24% 1.10%
B 38045 8335 4 4 0.01% 0.05%
C 38045 8338 7 7 0.02% 0.08%
D 38045 8337 135 135 0.35% 1.62%

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 0 128 534934 2677.22 981 960 199.5
A 0 226 9412 42.38 981 960 199.5
A 15 239 9359 42.11 981 960 199.5
B 11 51 89054 467.12 985 960 188.6
B 0 214 35568 183.51 985 960 188.6
B 12 111 19480 98.2 985 960 188.6
C 9 68 1366051 6210.07 953 959 219.8
C 1 16 9306 37.97 953 959 219.8
C 13 61 7481 29.67 953 959 219.8
D 2 244 483829 2063.26 955 927 234.0
D 2 152 469391 2001.58 955 927 234.0
D 2 14 322278 1373.02 955 927 234.0

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