ASTROSAT CZTI

Data Quality Report

Orbit 05241

Creation date: 2024-06-27T14:52:57.901020
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/AS1C01_015T01_9000000668_05241cztM0_level2.evt modeM0/AS1C01_015T01_9000000668_05241cztM0_level2_quad_clean.evt
Size (bytes)507,617,28072,743,040
Size484.1 MB 69.4 MB
Events in quadrant A3,121,461444,440
Events in quadrant B3,172,146446,132
Events in quadrant C3,067,746436,311
Events in quadrant D5,555,727407,388

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137473
B0138342
C0138242
D0209912

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6719681.012055%
B6719811.205537%
C6719340.506028%
D67196309.376395%

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 7774 6720 0 0 0.00% 0.00%
B 7774 6720 0 0 0.00% 0.00%
C 7774 6720 1 1 0.01% 0.01%
D 7774 6720 444 444 5.71% 6.61%

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 12 194 7934 43.17 811 794 165.4
A 0 226 7929 43.14 811 794 165.4
A 13 14 3436 15.98 811 794 165.4
B 12 111 15763 95.49 812 795 156.7
B 0 229 12048 71.79 812 795 156.7
B 11 111 12036 71.72 812 795 156.7
C 1 16 40125 218.75 773 780 179.9
C 12 4 7562 37.71 773 780 179.9
C 13 61 6257 30.45 773 780 179.9
D 11 145 2326818 12578.29 752 730 184.9
D 8 195 251003 1353.35 752 730 184.9
D 2 136 62660 334.89 752 730 184.9

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