ASTROSAT CZTI

Data Quality Report

Orbit 37217

Creation date: 2024-06-27T21:37:02.547246
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/AS1A11_079T01_9000005284_37217cztM0_level2.evt modeM0/AS1A11_079T01_9000005284_37217cztM0_level2_quad_clean.evt
Size (bytes)424,756,80077,287,680
Size405.1 MB 73.7 MB
Events in quadrant A2,768,732515,280
Events in quadrant B3,187,120509,399
Events in quadrant C3,162,171500,986
Events in quadrant D3,412,480470,611

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110943
B0124242
C0121682
D0132062

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4911160.325799%
B49112344.764814%
C49111422.891468%
D49111923.909591%

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 7034 4912 3 3 0.04% 0.06%
B 7034 4912 134 134 1.91% 2.73%
C 7034 4912 118 118 1.68% 2.40%
D 7034 4912 182 182 2.59% 3.71%

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 10 83 249448 1931.42 647 636 128.8
A 13 254 7426 52.71 647 636 128.8
A 3 137 6244 43.53 647 636 128.8
B 5 172 661949 5615.36 623 610 117.8
B 0 213 42020 351.61 623 610 117.8
B 5 184 19007 156.21 623 610 117.8
C 14 254 326645 2311.09 610 613 141.1
C 15 214 213346 1507.96 610 613 141.1
C 0 10 192916 1363.15 610 613 141.1
D 2 249 555747 3738.77 616 601 148.5
D 13 200 163711 1098.5 616 601 148.5
D 1 52 136780 917.13 616 601 148.5

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