ASTROSAT CZTI

Data Quality Report

Orbit 20015

Creation date: 2024-06-27T18:10:06.417420
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/AS1C04_001T01_9000002984_20015cztM0_level2.evt modeM0/AS1C04_001T01_9000002984_20015cztM0_level2_quad_clean.evt
Size (bytes)491,005,44086,143,680
Size468.3 MB 82.2 MB
Events in quadrant A3,778,430547,811
Events in quadrant B3,393,600551,101
Events in quadrant C3,175,290533,844
Events in quadrant D4,083,188524,079

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153323
B0141032
C0134642
D0162892

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64742103.243744%
B64741061.637319%
C64741021.575533%
D64742583.985171%

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 7579 6475 122 122 1.61% 1.88%
B 7579 6475 15 15 0.20% 0.23%
C 7579 6475 0 0 0.00% 0.00%
D 7579 6475 150 150 1.98% 2.32%

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 14 238 615146 3778.79 814 798 162.6
A 4 2 20591 121.74 814 798 162.6
A 5 16 8682 48.49 814 798 162.6
B 4 216 99780 651.25 808 787 152.0
B 0 197 49020 317.31 808 787 152.0
B 7 220 21931 139.1 808 787 152.0
C 14 238 123176 679.29 774 779 180.2
C 3 233 21244 113.58 774 779 180.2
C 0 207 9539 48.61 774 779 180.2
D 12 218 450998 2415.44 776 753 186.4
D 1 52 405016 2168.76 776 753 186.4
D 12 227 90934 483.8 776 753 186.4

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