ASTROSAT CZTI

Data Quality Report

Orbit 17817

Creation date: 2024-06-27T17:41:15.746835
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_015T01_9000002650_17817cztM0_level2.evt modeM0/AS1A05_015T01_9000002650_17817cztM0_level2_quad_clean.evt
Size (bytes)442,897,920109,356,480
Size422.4 MB 104.3 MB
Events in quadrant A3,096,305721,250
Events in quadrant B3,308,704748,419
Events in quadrant C3,230,179717,153
Events in quadrant D3,360,287696,221

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131682
B0138242
C0135592
D0141312

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6148641.040989%
B6149871.414864%
C61491362.211742%
D61491252.032851%

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 8763 6150 0 0 0.00% 0.00%
B 8764 6151 1 1 0.01% 0.02%
C 8764 6151 0 0 0.00% 0.00%
D 8764 6151 47 47 0.54% 0.76%

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 0 226 7064 39.08 804 792 160.5
A 12 194 5889 31.76 804 792 160.5
A 3 137 5723 30.72 804 792 160.5
B 0 230 41399 268.33 816 799 151.3
B 15 222 37010 239.32 816 799 151.3
B 12 111 17265 108.83 816 799 151.3
C 14 238 124317 679.7 788 794 181.7
C 5 218 18804 99.1 788 794 181.7
C 3 233 8735 43.7 788 794 181.7
D 7 238 229011 1226.49 784 767 186.1
D 10 70 70713 375.86 784 767 186.1
D 1 52 60090 318.78 784 767 186.1

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