ASTROSAT CZTI

Data Quality Report

Orbit 36556

Creation date: 2024-06-27T21:28:22.517624
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_049T02_9000005220_36556cztM0_level2.evt modeM0/AS1A11_049T02_9000005220_36556cztM0_level2_quad_clean.evt
Size (bytes)455,250,24073,108,800
Size434.2 MB 69.7 MB
Events in quadrant A3,059,137467,764
Events in quadrant B3,393,048459,079
Events in quadrant C3,236,838447,707
Events in quadrant D3,698,179427,487

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128663
B0139642
C0133302
D0150472

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5896681.153324%
B58961472.493216%
C58961622.747626%
D58962844.816825%

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 7178 5897 41 41 0.57% 0.70%
B 7178 5897 104 104 1.45% 1.76%
C 7178 5897 116 116 1.62% 1.97%
D 7178 5897 182 182 2.54% 3.09%

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 216611 1579.94 671 659 136.7
A 15 223 154369 1124.57 671 659 136.7
A 9 143 55899 404.14 671 659 136.7
B 5 255 340434 2647.81 662 643 128.3
B 5 172 308649 2400.13 662 643 128.3
B 0 190 55573 428.04 662 643 128.3
C 0 10 417972 2790.16 638 643 149.6
C 15 214 246376 1642.91 638 643 149.6
C 14 254 63353 419.26 638 643 149.6
D 13 249 455507 2936.35 633 616 154.9
D 2 250 213805 1376.15 633 616 154.9
D 13 171 196237 1262.75 633 616 154.9

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