ASTROSAT CZTI

Data Quality Report

Orbit 17237

Creation date: 2024-06-27T17:33:57.239709
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/AS1T03_063T01_9000002550_17237cztM0_level2.evt modeM0/AS1T03_063T01_9000002550_17237cztM0_level2_quad_clean.evt
Size (bytes)508,282,56063,581,760
Size484.7 MB 60.6 MB
Events in quadrant A3,502,199375,101
Events in quadrant B3,694,121376,274
Events in quadrant C3,643,387359,521
Events in quadrant D4,108,051355,985

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146182
B0152492
C0149993
D0165662

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6566931.416387%
B65661021.553457%
C65661041.583917%
D65661993.030765%

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 7782 6567 20 20 0.26% 0.30%
B 7782 6567 12 12 0.15% 0.18%
C 7782 6567 0 0 0.00% 0.00%
D 7782 6567 152 152 1.95% 2.31%

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 15 174 87267 486.11 887 871 177.7
A 0 226 8044 40.36 887 871 177.7
A 12 194 6485 31.59 887 871 177.7
B 7 220 128565 770.08 882 861 165.8
B 15 35 44113 260.82 882 861 165.8
B 12 111 18639 107.21 882 861 165.8
C 3 233 179181 908.8 848 856 196.2
C 14 238 131025 663.38 848 856 196.2
C 7 220 25586 126.03 848 856 196.2
D 1 52 296699 1434.99 855 831 206.2
D 15 0 203339 982.19 855 831 206.2
D 5 222 146229 705.2 855 831 206.2

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