ASTROSAT CZTI

Data Quality Report

Orbit 03127

Creation date: 2024-06-27T14:25:00.267428
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/AS1T01_118T01_9000000430_03127cztM0_level2.evt modeM0/AS1T01_118T01_9000000430_03127cztM0_level2_quad_clean.evt
Size (bytes)695,937,60065,352,960
Size663.7 MB 62.3 MB
Events in quadrant A4,753,155381,745
Events in quadrant B2,952,504433,301
Events in quadrant C9,408,109341,380
Events in quadrant D3,557,914402,913

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0179842
B0124921
C0320731
D0145001

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A599374312.397797%
B59931031.718672%
C5993175629.300851%
D59932223.704322%

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 7203 5993 538 538 7.47% 8.98%
B 7203 5993 1 1 0.01% 0.02%
C 7202 5992 1614 1614 22.41% 26.94%
D 7203 5993 123 123 1.71% 2.05%

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 12 247 1481085 10443.74 696 680 141.8
A 0 13 295004 2076.35 696 680 141.8
A 8 15 259141 1823.35 696 680 141.8
B 4 81 31932 221.34 741 724 141.0
B 15 204 12650 84.58 741 724 141.0
B 2 249 10865 71.92 741 724 141.0
C 0 219 6396408 44220.94 623 626 144.6
C 0 235 439060 3031.37 623 626 144.6
C 6 80 41198 280.52 623 626 144.6
D 13 223 361835 1953.64 702 688 184.9
D 12 233 230941 1245.56 702 688 184.9
D 13 114 75312 403.68 702 688 184.9

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