ASTROSAT CZTI

Data Quality Report

Orbit 17431

Creation date: 2024-06-27T17:36:27.231242
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_198T01_9000002578_17431cztM0_level2.evt modeM0/AS1A05_198T01_9000002578_17431cztM0_level2_quad_clean.evt
Size (bytes)622,918,080107,755,200
Size594.1 MB 102.8 MB
Events in quadrant A5,955,989653,206
Events in quadrant B4,322,227710,468
Events in quadrant C3,812,715684,523
Events in quadrant D4,247,263674,325

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0227702
B0179632
C0161942
D0179752

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A777085110.952381%
B77701922.471042%
C77701111.428571%
D77701441.853282%

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 8730 7772 713 713 8.17% 9.17%
B 8730 7772 41 41 0.47% 0.53%
C 8730 7772 2 2 0.02% 0.03%
D 8730 7772 92 92 1.05% 1.18%

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 10 253 2409137 12899.25 913 893 186.7
A 14 237 9282 44.93 913 893 186.7
A 6 16 9115 44.04 913 893 186.7
B 15 35 239491 1286.88 951 927 185.4
B 7 220 168451 903.67 951 927 185.4
B 3 209 62965 334.65 951 927 185.4
C 14 238 137500 642.08 902 906 212.7
C 5 218 113750 530.44 902 906 212.7
C 3 233 27717 126.03 902 906 212.7
D 1 52 182250 810.09 916 888 223.9
D 13 232 172191 765.16 916 888 223.9
D 13 189 151454 672.53 916 888 223.9

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