ASTROSAT CZTI

Data Quality Report

Orbit 17975

Creation date: 2024-06-27T17:43:21.233992
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/AS1A05_019T01_9000002672_17975cztM0_level2.evt modeM0/AS1A05_019T01_9000002672_17975cztM0_level2_quad_clean.evt
Size (bytes)474,675,840105,894,720
Size452.7 MB 101.0 MB
Events in quadrant A3,238,209713,610
Events in quadrant B3,393,074716,243
Events in quadrant C3,288,588669,310
Events in quadrant D4,027,560667,913

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138192
B0141342
C0137322
D0161702

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6307620.983035%
B6307781.236721%
C63071151.823371%
D63071993.155224%

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 7502 6308 0 0 0.00% 0.00%
B 7502 6308 17 17 0.23% 0.27%
C 7502 6308 15 15 0.20% 0.24%
D 7502 6308 121 121 1.61% 1.92%

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 15 174 29107 169.91 827 811 166.5
A 14 237 17688 101.34 827 811 166.5
A 0 226 7294 38.93 827 811 166.5
B 7 220 133446 865.04 815 796 153.3
B 4 216 18619 116.23 815 796 153.3
B 12 111 17694 110.2 815 796 153.3
C 14 238 121145 671.41 772 777 179.3
C 0 207 77421 427.52 772 777 179.3
C 3 233 63543 350.11 772 777 179.3
D 11 176 498052 2374.11 788 770 209.5
D 5 222 269185 1281.46 788 770 209.5
D 7 38 81869 387.18 788 770 209.5

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