ASTROSAT CZTI

Data Quality Report

Orbit 04685

Creation date: 2024-06-27T14:45:38.359426
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/AS1G05_235T01_9000000590_04685cztM0_level2.evt modeM0/AS1G05_235T01_9000000590_04685cztM0_level2_quad_clean.evt
Size (bytes)455,086,08070,986,240
Size434.0 MB 67.7 MB
Events in quadrant A3,092,966431,798
Events in quadrant B3,196,484429,961
Events in quadrant C3,518,491416,523
Events in quadrant D3,529,280414,439

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137983
B0139912
C0149232
D0151972

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6551691.053274%
B6551400.610594%
C65511402.137078%
D65511051.602809%

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 7636 6552 15 15 0.20% 0.23%
B 7636 6552 0 0 0.00% 0.00%
C 7636 6552 103 103 1.35% 1.57%
D 7636 6552 69 69 0.90% 1.05%

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 8 15 111612 713.07 764 747 155.5
A 3 1 18058 111.34 764 747 155.5
A 12 113 8679 51.02 764 747 155.5
B 15 204 154780 1041.16 772 755 147.9
B 0 183 27927 183.67 772 755 147.9
B 12 111 11291 71.22 772 755 147.9
C 14 48 607159 3551.51 734 738 170.8
C 8 128 14846 82.62 734 738 170.8
C 9 247 9394 50.69 734 738 170.8
D 13 235 203512 1141.02 736 715 177.7
D 2 136 147102 823.63 736 715 177.7
D 12 233 125620 702.77 736 715 177.7

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