ASTROSAT CZTI

Data Quality Report

Orbit 21102

Creation date: 2024-06-27T18:23:34.321046
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_163T01_9000003118_21102cztM0_level2.evt modeM0/AS1A05_163T01_9000003118_21102cztM0_level2_quad_clean.evt
Size (bytes)497,275,20095,904,000
Size474.2 MB 91.5 MB
Events in quadrant A3,150,303634,551
Events in quadrant B3,386,747646,545
Events in quadrant C3,287,791606,906
Events in quadrant D4,810,267578,999

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133692
B0139562
C0137552
D0187302

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6264260.415070%
B6264460.734355%
C6264731.165390%
D6263991.580712%

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 7544 6265 0 0 0.00% 0.00%
B 7544 6265 6 6 0.08% 0.10%
C 7544 6265 1 1 0.01% 0.02%
D 7543 6264 31 31 0.41% 0.49%

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 10828 62.1 814 801 161.5
A 0 226 7066 38.8 814 801 161.5
A 8 205 6620 36.04 814 801 161.5
B 0 219 73039 473.11 816 796 152.7
B 0 190 38971 250.0 816 796 152.7
B 3 64 34302 219.43 816 796 152.7
C 14 238 124459 680.3 783 790 181.8
C 7 221 105339 575.12 783 790 181.8
C 9 54 6639 32.17 783 790 181.8
D 1 239 743222 3899.02 783 759 190.4
D 1 20 705899 3703.02 783 759 190.4
D 1 52 187427 980.28 783 759 190.4

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