ASTROSAT CZTI

Data Quality Report

Orbit 21614

Creation date: 2024-06-27T18:30:13.514654
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_094T01_9000003204_21614cztM0_level2.evt modeM0/AS1A05_094T01_9000003204_21614cztM0_level2_quad_clean.evt
Size (bytes)471,548,16095,621,760
Size449.7 MB 91.2 MB
Events in quadrant A3,248,613610,290
Events in quadrant B3,422,820621,196
Events in quadrant C3,247,935599,214
Events in quadrant D3,891,321583,408

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141531
B0145181
C0141461
D0162211

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69151321.908894%
B69161301.879699%
C69161341.937536%
D69162052.964141%

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 7320 6916 0 0 0.00% 0.00%
B 7321 6916 8 8 0.11% 0.12%
C 7321 6916 0 0 0.00% 0.00%
D 7321 6917 85 85 1.16% 1.23%

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 15 236 31372 181.58 835 817 168.3
A 13 254 10406 56.98 835 817 168.3
A 0 226 7303 38.54 835 817 168.3
B 3 64 65395 405.84 830 809 159.1
B 0 190 39018 240.09 830 809 159.1
B 0 219 23099 140.06 830 809 159.1
C 14 238 123719 655.36 798 802 187.6
C 13 61 6034 27.89 798 802 187.6
C 8 128 4643 20.48 798 802 187.6
D 13 172 269840 1371.68 807 780 196.2
D 1 52 160628 814.91 807 780 196.2
D 13 104 143893 729.6 807 780 196.2

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