ASTROSAT CZTI

Data Quality Report

Orbit 22522

Creation date: 2024-06-27T18:42:16.789145
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/AS1A08_003T01_9000003342_22522cztM0_level2.evt modeM0/AS1A08_003T01_9000003342_22522cztM0_level2_quad_clean.evt
Size (bytes)498,905,28066,726,720
Size475.8 MB 63.6 MB
Events in quadrant A3,500,080396,094
Events in quadrant B3,788,063402,991
Events in quadrant C3,620,485393,210
Events in quadrant D3,771,251386,193

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144942
B0153082
C0148752
D0154812

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6333941.484289%
B63331762.779094%
C63331692.668562%
D63331091.721143%

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 7633 6333 0 0 0.00% 0.00%
B 7633 6333 23 23 0.30% 0.36%
C 7633 6333 0 0 0.00% 0.00%
D 7633 6333 18 18 0.24% 0.28%

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 13 254 9547 48.15 908 893 179.7
A 0 226 8120 40.21 908 893 179.7
A 3 137 7047 34.24 908 893 179.7
B 15 33 216297 1283.7 900 883 167.8
B 4 171 21192 121.03 900 883 167.8
B 12 111 18780 106.65 900 883 167.8
C 14 238 140189 683.48 886 897 203.8
C 0 10 15131 69.84 886 897 203.8
C 0 239 10259 45.94 886 897 203.8
D 1 52 312619 1432.45 898 875 217.6
D 13 249 27840 123.9 898 875 217.6
D 2 234 26158 116.17 898 875 217.6

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