ASTROSAT CZTI

Data Quality Report

Orbit 47187

Creation date: 2024-06-27T23:32:36.022772
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/AS1A13_037T01_9000006300_47187cztM0_level2.fits modeM0/AS1A13_037T01_9000006300_47187cztM0_level2_quad_clean.evt
Size (bytes)1,087,724,160263,102,400
Size1.0 GB 250.9 MB
Events in quadrant A15,394,6411,743,725
Events in quadrant B8,291,9641,833,996
Events in quadrant C7,540,9501,718,777
Events in quadrant D7,801,2801,568,054

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03260
B03260
C03260
D03260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0564863
B0355283
C0341963
D0349753

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A159744903.067485%
B159752871.796557%
C159741721.076750%
D159742291.433580%

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 19299 15975 27 27 0.14% 0.17%
B 19300 15977 42 42 0.22% 0.26%
C 19299 15977 84 84 0.44% 0.53%
D 19299 15977 164 164 0.85% 1.03%

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 10 83 8252382 22028.27 1818 1781 374.5
A 9 191 86273 225.59 1818 1781 374.5
A 13 254 31274 78.74 1818 1781 374.5
B 15 201 582714 1642.57 1819 1762 353.7
B 0 200 133676 372.97 1819 1762 353.7
B 4 21 109411 304.36 1819 1762 353.7
C 14 254 489051 1179.19 1765 1768 413.2
C 15 208 124270 296.45 1765 1768 413.2
C 8 222 27940 63.33 1765 1768 413.2
D 7 55 417699 946.89 1769 1712 439.3
D 1 47 177416 399.95 1769 1712 439.3
D 5 171 102635 229.73 1769 1712 439.3

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