ASTROSAT CZTI

Data Quality Report

Orbit 15110

Creation date: 2024-06-27T17:03:57.667545
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/AS1A04_148T03_9000002222_15110cztM0_level2.evt modeM0/AS1A04_148T03_9000002222_15110cztM0_level2_quad_clean.evt
Size (bytes)494,645,760106,116,480
Size471.7 MB 101.2 MB
Events in quadrant A3,042,707698,064
Events in quadrant B4,835,256696,070
Events in quadrant C3,643,325712,206
Events in quadrant D3,042,472678,714

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132482
B0186032
C0150112
D0133952

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6145240.390561%
B61454697.632221%
C6145530.862490%
D6145390.634662%

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 7436 6147 2 2 0.03% 0.03%
B 7436 6147 283 283 3.81% 4.60%
C 7436 6146 11 11 0.15% 0.18%
D 7436 6147 17 17 0.23% 0.28%

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 12 189 39134 249.95 770 755 153.5
A 13 248 15398 95.37 770 755 153.5
A 9 143 12144 74.17 770 755 153.5
B 10 245 728325 5172.93 760 743 140.7
B 3 64 608299 4319.58 760 743 140.7
B 0 229 372729 2644.73 760 743 140.7
C 3 233 548311 3150.56 763 769 173.8
C 4 254 117421 671.22 763 769 173.8
C 13 61 5536 27.43 763 769 173.8
D 9 1 45481 245.52 756 734 182.3
D 2 120 31134 166.8 756 734 182.3
D 13 172 26035 138.82 756 734 182.3

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