ASTROSAT CZTI

Data Quality Report

Orbit 25519

Creation date: 2024-06-27T19:18:34.762887
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_147T01_9000003722_25519cztM0_level2.evt modeM0/AS1A07_147T01_9000003722_25519cztM0_level2_quad_clean.evt
Size (bytes)496,535,04068,742,720
Size473.5 MB 65.6 MB
Events in quadrant A3,553,173424,369
Events in quadrant B3,594,719431,471
Events in quadrant C3,500,493397,711
Events in quadrant D3,961,179387,487

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142410
B0144500
C0140780
D0156010

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6310841.331220%
B63101091.727417%
C63101342.123613%
D63101322.091918%

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 7631 6311 0 0 0.00% 0.00%
B 7631 6311 0 0 0.00% 0.00%
C 7631 6311 0 0 0.00% 0.00%
D 7631 6311 51 51 0.67% 0.81%

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 9441 47.17 922 909 180.9
A 0 226 7980 39.1 922 909 180.9
A 3 137 7664 37.35 922 909 180.9
B 0 190 21240 120.17 913 895 169.3
B 12 111 20130 113.62 913 895 169.3
B 11 111 18144 101.88 913 895 169.3
C 14 238 141675 712.82 856 865 197.5
C 3 233 12580 59.3 856 865 197.5
C 0 10 9343 42.92 856 865 197.5
D 1 52 614828 2934.21 866 841 209.3
D 8 195 58780 276.89 866 841 209.3
D 2 234 23736 109.41 866 841 209.3

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