ASTROSAT CZTI

Data Quality Report

Orbit 18966

Creation date: 2024-06-27T17:57:11.062216
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/AS1A05_205T01_9000002824_18966cztM0_level2.evt modeM0/AS1A05_205T01_9000002824_18966cztM0_level2_quad_clean.evt
Size (bytes)701,496,00081,947,520
Size669.0 MB 78.2 MB
Events in quadrant A3,643,642508,809
Events in quadrant B4,260,475514,521
Events in quadrant C3,702,344501,787
Events in quadrant D9,121,417424,559

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159013
B0175232
C0158842
D0322712

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76272303.015602%
B76283434.496592%
C76282122.779234%
D7628187324.554274%

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 7692 7630 0 0 0.00% 0.00%
B 7693 7631 62 62 0.81% 0.81%
C 7693 7631 0 0 0.00% 0.00%
D 7693 7631 1376 1376 17.89% 18.03%

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 10677 50.8 944 922 192.0
A 0 226 8172 37.75 944 922 192.0
A 3 137 7405 33.76 944 922 192.0
B 7 220 280456 1548.34 932 906 180.5
B 3 112 236992 1307.6 932 906 180.5
B 0 189 40074 216.94 932 906 180.5
C 14 238 138757 638.85 907 912 215.8
C 7 220 14841 64.55 907 912 215.8
C 3 233 7451 30.31 907 912 215.8
D 12 218 3178923 15199.96 846 822 209.1
D 7 238 2358313 11275.22 846 822 209.1
D 1 52 247612 1180.33 846 822 209.1

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