ASTROSAT CZTI

Data Quality Report

Orbit 15490

Creation date: 2024-06-27T17:09:15.294319
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_036T01_9000002290_15490cztM0_level2.evt modeM0/AS1G08_036T01_9000002290_15490cztM0_level2_quad_clean.evt
Size (bytes)508,345,920100,716,480
Size484.8 MB 96.1 MB
Events in quadrant A3,275,324660,215
Events in quadrant B3,730,903664,812
Events in quadrant C3,297,831640,994
Events in quadrant D4,638,108618,424

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139852
B0152261
C0138791
D0183861

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6680831.242515%
B66801081.616766%
C6680731.092814%
D66801982.964072%

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 7506 6682 9 9 0.12% 0.13%
B 7506 6682 24 24 0.32% 0.36%
C 7506 6682 0 0 0.00% 0.00%
D 7506 6682 138 138 1.84% 2.07%

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 0 253 50743 298.07 827 811 167.5
A 9 143 31004 180.24 827 811 167.5
A 0 226 7544 40.19 827 811 167.5
B 10 245 179043 1138.41 821 802 156.6
B 4 142 160917 1022.64 821 802 156.6
B 0 230 33144 206.56 821 802 156.6
C 14 238 120216 651.07 782 785 183.4
C 3 233 110871 600.13 782 785 183.4
C 9 54 9584 47.97 782 785 183.4
D 1 52 715556 3672.27 793 769 194.6
D 5 222 668969 3432.92 793 769 194.6
D 10 70 58639 297.31 793 769 194.6

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