ASTROSAT CZTI

Data Quality Report

Orbit 17682

Creation date: 2024-06-27T17:39:28.595086
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/AS1C04_009T02_9000002618_17682cztM0_level2.evt modeM0/AS1C04_009T02_9000002618_17682cztM0_level2_quad_clean.evt
Size (bytes)450,613,440123,863,040
Size429.7 MB 118.1 MB
Events in quadrant A3,016,407839,130
Events in quadrant B3,559,932843,722
Events in quadrant C3,196,191807,153
Events in quadrant D3,420,646796,231

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135350
B0151940
C0138790
D0148360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01370

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6670110.164918%
B6670620.929535%
C6670610.914543%
D6670691.034483%

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 7610 6671 0 0 0.00% 0.00%
B 7610 6671 28 28 0.37% 0.42%
C 7610 6671 0 0 0.00% 0.00%
D 7610 6671 34 34 0.45% 0.51%

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 0 226 6716 37.33 784 766 159.4
A 3 137 5874 32.05 784 766 159.4
A 12 194 5808 31.64 784 766 159.4
B 7 220 162921 1080.08 785 764 150.1
B 10 245 114332 756.44 785 764 150.1
B 0 189 64228 422.72 785 764 150.1
C 14 238 116988 660.37 756 760 176.0
C 3 233 94218 530.99 756 760 176.0
C 5 218 36470 202.89 756 760 176.0
D 12 233 128895 697.02 765 743 183.9
D 1 52 122887 664.34 765 743 183.9
D 7 238 105912 572.01 765 743 183.9

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