ASTROSAT CZTI

Data Quality Report

Orbit 25301

Creation date: 2024-06-27T19:16:05.864307
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/AS1A09_022T01_9000003702_25301cztM0_level2.evt modeM0/AS1A09_022T01_9000003702_25301cztM0_level2_quad_clean.evt
Size (bytes)563,253,120116,686,080
Size537.2 MB 111.3 MB
Events in quadrant A3,132,930830,648
Events in quadrant B4,081,498805,304
Events in quadrant C3,122,843779,270
Events in quadrant D6,335,850720,748

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127960
B0158760
C0126870
D0228200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A56851011.776605%
B56863395.962012%
C56861222.145621%
D568594816.675462%

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 7000 5686 19 19 0.27% 0.33%
B 7001 5686 181 181 2.59% 3.18%
C 7001 5687 4 4 0.06% 0.07%
D 7001 5687 836 836 11.94% 14.70%

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 6 16 92313 592.28 788 775 154.6
A 13 254 9793 58.35 788 775 154.6
A 0 226 6996 40.25 788 775 154.6
B 3 64 1049869 7581.2 757 741 138.4
B 0 190 55972 399.11 757 741 138.4
B 12 111 15602 107.39 757 741 138.4
C 14 238 121747 712.0 744 750 169.9
C 0 239 87705 511.68 744 750 169.9
C 3 233 6992 36.73 744 750 169.9
D 1 52 1576807 8952.54 733 712 176.0
D 12 33 1257880 7140.97 733 712 176.0
D 8 195 176949 1001.06 733 712 176.0

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