ASTROSAT CZTI

Data Quality Report

Orbit 29421

Creation date: 2024-06-27T20:03:58.211471
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/AS1A10_102T05_9000004232_29421cztM0_level2.evt modeM0/AS1A10_102T05_9000004232_29421cztM0_level2_quad_clean.evt
Size (bytes)1,319,840,640123,822,720
Size1.2 GB 118.1 MB
Events in quadrant A4,681,973847,659
Events in quadrant B5,094,433864,116
Events in quadrant C22,312,323536,484
Events in quadrant D7,213,107811,226

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02020
B02020
C02020
D02020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0203062
B0215093
C0729642
D0283352

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9921560.564459%
B99201191.199597%
C9920911191.844758%
D99204514.546371%

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 11246 9923 0 0 0.00% 0.00%
B 11245 9922 26 26 0.23% 0.26%
C 11245 9922 7163 7163 63.70% 72.19%
D 11245 9922 313 313 2.78% 3.15%

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 18840 71.97 1211 1186 245.3
A 3 137 12197 44.89 1211 1186 245.3
A 0 226 10384 37.5 1211 1186 245.3
B 10 245 271940 1170.17 1201 1169 231.4
B 12 111 29006 120.3 1201 1169 231.4
B 0 190 27774 114.98 1201 1169 231.4
C 3 233 19003237 101351.83 810 816 187.5
C 14 238 121369 642.98 810 816 187.5
C 2 114 16788 85.19 810 816 187.5
D 8 195 846863 3052.92 1161 1129 277.0
D 7 80 663760 2391.96 1161 1129 277.0
D 1 52 660434 2379.95 1161 1129 277.0

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