ASTROSAT CZTI

Data Quality Report

Orbit 03954

Creation date: 2024-06-27T14:35:37.920785
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/AS1G05_246T02_9000000504_03954cztM0_level2.evt modeM0/AS1G05_246T02_9000000504_03954cztM0_level2_quad_clean.evt
Size (bytes)478,762,56061,375,680
Size456.6 MB 58.5 MB
Events in quadrant A3,779,738347,182
Events in quadrant B3,470,743348,177
Events in quadrant C3,086,020345,069
Events in quadrant D3,692,475335,050

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156002
B0147371
C0141431
D0159831

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6928931.342379%
B6928640.923788%
C6928480.692841%
D6928811.169169%

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 7738 6929 18 18 0.23% 0.26%
B 7738 6929 0 0 0.00% 0.00%
C 7738 6929 0 0 0.00% 0.00%
D 7738 6929 43 43 0.56% 0.62%

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 8 15 235903 1414.82 806 788 166.2
A 0 118 205456 1231.61 806 788 166.2
A 0 199 140093 838.28 806 788 166.2
B 3 0 149761 940.82 817 799 158.3
B 4 81 72666 453.9 817 799 158.3
B 5 184 37260 230.28 817 799 158.3
C 1 16 19669 101.47 785 787 186.1
C 13 61 6791 32.26 785 787 186.1
C 3 202 1891 5.93 785 787 186.1
D 12 233 221334 1174.63 775 752 187.8
D 10 246 168801 894.88 775 752 187.8
D 1 7 109598 579.62 775 752 187.8

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