ASTROSAT CZTI

Data Quality Report

Orbit 06251

Creation date: 2024-06-27T15:04:44.638945
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/AS1A02_151T01_9000000818_06251cztM0_level2.evt modeM0/AS1A02_151T01_9000000818_06251cztM0_level2_quad_clean.evt
Size (bytes)461,816,64073,307,520
Size440.4 MB 69.9 MB
Events in quadrant A3,230,817444,746
Events in quadrant B3,435,946450,845
Events in quadrant C3,042,521446,506
Events in quadrant D3,839,801428,782

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139163
B0144472
C0134312
D0156722

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64281081.680149%
B64281702.644680%
C6428751.166770%
D64281792.784692%

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 7633 6428 0 0 0.00% 0.00%
B 7633 6428 31 31 0.41% 0.48%
C 7633 6428 0 0 0.00% 0.00%
D 7633 6428 55 55 0.72% 0.86%

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 14 111 144460 896.67 800 784 160.2
A 8 15 8228 46.46 800 784 160.2
A 0 226 7602 42.55 800 784 160.2
B 3 64 272592 1794.85 799 781 151.4
B 4 81 28609 183.76 799 781 151.4
B 0 219 22196 141.41 799 781 151.4
C 13 61 6204 30.57 778 783 177.4
C 1 0 5436 26.24 778 783 177.4
C 3 202 1937 6.51 778 783 177.4
D 12 220 440174 2342.12 774 748 187.6
D 2 152 114607 606.86 774 748 187.6
D 12 221 100002 529.02 774 748 187.6

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