ASTROSAT CZTI

Data Quality Report

Orbit 23357

Creation date: 2024-06-27T18:53:16.054148
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/AS1A07_135T01_9000003452_23357cztM0_level2.evt modeM0/AS1A07_135T01_9000003452_23357cztM0_level2_quad_clean.evt
Size (bytes)533,937,60093,568,320
Size509.2 MB 89.2 MB
Events in quadrant A3,211,537600,315
Events in quadrant B3,304,607612,385
Events in quadrant C5,479,899578,550
Events in quadrant D3,720,786575,943

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136252
B0137972
C0208902
D0152592

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6689300.448498%
B6690370.553064%
C66902633.931241%
D66901041.554559%

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 7689 6689 0 0 0.00% 0.00%
B 7690 6690 3 3 0.04% 0.04%
C 7690 6690 64 64 0.83% 0.96%
D 7690 6690 77 77 1.00% 1.15%

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 13 254 9795 53.24 832 814 168.7
A 0 226 7178 37.72 832 814 168.7
A 3 137 7118 37.37 832 814 168.7
B 0 189 24819 152.71 825 806 157.2
B 12 111 19237 117.21 825 806 157.2
B 11 111 17248 104.56 825 806 157.2
C 0 239 2202813 11814.38 791 797 186.4
C 14 238 124101 661.56 791 797 186.4
C 7 247 41420 217.95 791 797 186.4
D 1 52 470924 2359.25 809 784 199.3
D 2 152 92718 461.34 809 784 199.3
D 12 233 32763 160.48 809 784 199.3

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