ASTROSAT CZTI

Data Quality Report

Orbit 11737

Creation date: 2024-06-27T16:17:36.721407
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/AS1G08_006T03_9000001732_11737cztM0_level2.evt modeM0/AS1G08_006T03_9000001732_11737cztM0_level2_quad_clean.evt
Size (bytes)472,746,240116,712,000
Size450.8 MB 111.3 MB
Events in quadrant A3,445,382776,983
Events in quadrant B3,995,513794,801
Events in quadrant C2,988,681789,103
Events in quadrant D3,468,976743,432

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140502
B0159341
C0126851
D0142461

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6166390.632501%
B61661702.757055%
C6166100.162180%
D6166430.697373%

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 7477 6168 6 6 0.08% 0.10%
B 7477 6168 75 75 1.00% 1.22%
C 7477 6168 0 0 0.00% 0.00%
D 7477 6168 23 23 0.31% 0.37%

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 1 162 103499 665.77 765 751 154.3
A 8 15 100677 647.48 765 751 154.3
A 13 251 97933 629.7 765 751 154.3
B 4 239 320400 2256.03 772 755 141.7
B 15 204 274141 1929.54 772 755 141.7
B 3 64 253663 1785.0 772 755 141.7
C 13 61 5644 28.1 765 769 173.5
C 14 234 3721 17.01 765 769 173.5
C 12 4 2338 9.04 765 769 173.5
D 8 195 324335 1842.29 749 731 175.7
D 1 52 87912 496.32 749 731 175.7
D 10 199 70142 395.16 749 731 175.7

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