ASTROSAT CZTI

Data Quality Report

Orbit 00911

Creation date: 2024-06-27T14:04:36.055293
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/AS1P01_161T02_9000000184_00911cztM0_level2.evt modeM0/AS1P01_161T02_9000000184_00911cztM0_level2_quad_clean.evt
Size (bytes)1,188,233,28077,057,280
Size1.1 GB 73.5 MB
Events in quadrant A7,168,389515,516
Events in quadrant B8,437,962501,706
Events in quadrant C7,418,201500,256
Events in quadrant D12,566,008396,633

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0255640
B0293510
C0262850
D0417730

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5983370.618419%
B59832073.459803%
C5983470.785559%
D5984161526.988636%

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 7238 5984 223 223 3.08% 3.73%
B 7238 5984 684 684 9.45% 11.43%
C 7238 5984 241 241 3.33% 4.03%
D 7239 5985 2918 2918 40.31% 48.76%

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 15 127 135406 307.0 1832 1842 435.1
A 11 79 6935 11.71 1832 1842 435.1
A 15 233 6030 9.63 1832 1842 435.1
B 3 0 1089451 2499.69 1875 1883 435.1
B 7 221 73965 165.67 1875 1883 435.1
B 5 249 25576 54.46 1875 1883 435.1
C 9 83 233775 480.23 1757 1819 483.0
C 12 254 151605 310.11 1757 1819 483.0
C 15 241 57390 115.05 1757 1819 483.0
D 12 188 6443476 13799.31 1535 1590 466.8
D 1 4 140324 297.19 1535 1590 466.8
D 10 85 64282 134.29 1535 1590 466.8

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