ASTROSAT CZTI

Data Quality Report

Orbit 06816

Creation date: 2024-06-27T15:11:59.272385
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/AS1G06_086T02_9000000936_06816cztM0_level2.evt modeM0/AS1G06_086T02_9000000936_06816cztM0_level2_quad_clean.evt
Size (bytes)458,614,08062,262,720
Size437.4 MB 59.4 MB
Events in quadrant A3,239,129367,900
Events in quadrant B3,302,305372,188
Events in quadrant C3,294,405364,045
Events in quadrant D3,635,844351,768

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134652
B0136251
C0136281
D0151461

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6150911.479675%
B61501362.211382%
C6150931.512195%
D61501732.813008%

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 7425 6151 2 2 0.03% 0.03%
B 7425 6151 22 22 0.30% 0.36%
C 7425 6151 26 26 0.35% 0.42%
D 7425 6151 73 73 0.98% 1.19%

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 8 15 157040 964.13 796 780 162.1
A 13 248 15555 91.16 796 780 162.1
A 0 226 7780 43.19 796 780 162.1
B 4 81 134346 887.36 797 780 150.5
B 0 214 39152 254.93 797 780 150.5
B 0 228 32915 213.49 797 780 150.5
C 12 16 215408 1211.37 766 773 177.2
C 9 247 73223 408.9 766 773 177.2
C 10 22 10953 57.45 766 773 177.2
D 8 195 337909 1816.21 761 738 185.6
D 14 34 286981 1541.88 761 738 185.6
D 2 216 68402 364.48 761 738 185.6

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