ASTROSAT CZTI

Data Quality Report

Orbit 28799

Creation date: 2024-06-27T19:56:29.350079
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/AS1A10_103T01_9000004132_28799cztM0_level2.evt modeM0/AS1A10_103T01_9000004132_28799cztM0_level2_quad_clean.evt
Size (bytes)1,268,383,680219,473,280
Size1.2 GB 209.3 MB
Events in quadrant A8,053,9191,413,591
Events in quadrant B7,726,1391,443,580
Events in quadrant C8,594,4561,366,244
Events in quadrant D12,957,3501,319,102

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03260
B03260
C03260
D03260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0342924
B0334043
C0356073
D0495043

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A160131911.192781%
B160142321.448732%
C160146634.140127%
D160149956.213313%

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 17378 16013 13 13 0.07% 0.08%
B 17379 16014 15 15 0.09% 0.09%
C 17379 16014 89 89 0.51% 0.56%
D 17379 16014 852 852 4.90% 5.32%

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 14 235 525265 1367.66 1902 1858 382.7
A 15 174 85769 219.26 1902 1858 382.7
A 14 239 36710 91.07 1902 1858 382.7
B 5 255 103655 283.58 1896 1847 359.0
B 10 246 76692 208.48 1896 1847 359.0
B 0 229 59926 161.78 1896 1847 359.0
C 4 254 532603 1246.91 1817 1828 425.7
C 14 238 397640 929.85 1817 1828 425.7
C 15 208 223227 520.11 1817 1828 425.7
D 1 52 1903925 4410.35 1810 1762 431.3
D 12 79 1886066 4368.94 1810 1762 431.3
D 8 195 985646 2281.23 1810 1762 431.3

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