ASTROSAT CZTI

Data Quality Report

Orbit 27704

Creation date: 2024-06-27T19:43:20.127776
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/AS1T03_262T01_9000003988_27704cztM0_level2.evt modeM0/AS1T03_262T01_9000003988_27704cztM0_level2_quad_clean.evt
Size (bytes)467,349,120101,845,440
Size445.7 MB 97.1 MB
Events in quadrant A3,196,469677,395
Events in quadrant B3,458,976686,083
Events in quadrant C3,375,176662,162
Events in quadrant D3,707,811631,817

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133580
B0143550
C0139580
D0151840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6117751.226091%
B6117801.307831%
C61161412.305428%
D61162053.351864%

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 7422 6117 1 1 0.01% 0.02%
B 7422 6117 2 2 0.03% 0.03%
C 7421 6116 2 2 0.03% 0.03%
D 7421 6116 146 146 1.97% 2.39%

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 10639 60.45 823 807 162.6
A 8 192 7902 43.62 823 807 162.6
A 3 137 7213 39.39 823 807 162.6
B 0 230 222466 1474.94 816 797 150.3
B 0 190 31200 202.3 816 797 150.3
B 12 111 17202 109.16 816 797 150.3
C 14 238 129931 694.8 801 808 185.8
C 3 233 96143 512.99 801 808 185.8
C 15 208 10156 50.3 801 808 185.8
D 11 176 412815 2202.45 796 779 187.1
D 12 2 89805 475.87 796 779 187.1
D 2 250 88825 470.63 796 779 187.1

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