ASTROSAT CZTI

Data Quality Report

Orbit 21952

Creation date: 2024-06-27T18:34:25.598892
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/AS1A07_007T02_9000003244_21952cztM0_level2.evt modeM0/AS1A07_007T02_9000003244_21952cztM0_level2_quad_clean.evt
Size (bytes)520,608,96090,714,240
Size496.5 MB 86.5 MB
Events in quadrant A3,705,753554,622
Events in quadrant B3,872,948564,015
Events in quadrant C3,755,867547,522
Events in quadrant D3,900,624536,676

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159202
B0162672
C0159743
D0168422

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7829801.021842%
B78291021.302848%
C78281011.290240%
D78281341.711804%

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 9384 7829 0 0 0.00% 0.00%
B 9384 7829 9 9 0.10% 0.11%
C 9383 7828 0 0 0.00% 0.00%
D 9383 7828 75 75 0.80% 0.96%

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 12695 60.79 958 935 193.5
A 4 2 9178 42.61 958 935 193.5
A 3 137 8331 38.23 958 935 193.5
B 3 64 44725 238.73 956 929 183.4
B 0 230 34459 182.77 956 929 183.4
B 12 111 22956 120.07 956 929 183.4
C 14 238 145086 662.57 924 933 217.6
C 9 54 6770 26.83 924 933 217.6
C 13 61 6516 25.66 924 933 217.6
D 11 176 301884 1325.65 929 901 227.0
D 2 136 34262 146.93 929 901 227.0
D 2 234 29497 125.95 929 901 227.0

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