ASTROSAT CZTI

Data Quality Report

Orbit 46460

Creation date: 2024-06-27T23:23:23.055333
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/AS1A13_037T01_9000006212_46460cztM0_level2.fits modeM0/AS1A13_037T01_9000006212_46460cztM0_level2_quad_clean.evt
Size (bytes)453,009,600104,869,440
Size432.0 MB 100.0 MB
Events in quadrant A5,745,386702,755
Events in quadrant B3,102,706736,840
Events in quadrant C3,221,167682,038
Events in quadrant D4,223,911626,026

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0212951
B0133341
C0139761
D0169311

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61291792.920542%
B6129901.468429%
C61291492.431065%
D61301712.789560%

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 7314 6129 8 8 0.11% 0.13%
B 7314 6130 30 30 0.41% 0.49%
C 7314 6130 117 117 1.60% 1.91%
D 7315 6131 150 150 2.05% 2.45%

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 2913748 20255.44 700 687 143.8
A 15 235 68227 469.63 700 687 143.8
A 2 79 20990 141.17 700 687 143.8
B 10 128 122015 890.97 702 680 136.2
B 5 172 79977 582.28 702 680 136.2
B 5 32 37811 272.66 702 680 136.2
C 14 254 485736 3053.26 677 682 158.9
C 3 233 51541 320.14 677 682 158.9
C 2 14 32771 201.99 677 682 158.9
D 8 176 827854 4882.58 681 662 169.4
D 1 52 572786 3377.02 681 662 169.4
D 13 249 50278 292.86 681 662 169.4

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