ASTROSAT CZTI

Data Quality Report

Orbit 25284

Creation date: 2024-06-27T19:15:52.587896
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/AS1A09_006T01_9000003700_25284cztM0_level2.evt modeM0/AS1A09_006T01_9000003700_25284cztM0_level2_quad_clean.evt
Size (bytes)483,871,68067,559,040
Size461.5 MB 64.4 MB
Events in quadrant A3,190,081415,086
Events in quadrant B3,470,805415,755
Events in quadrant C3,430,688390,066
Events in quadrant D4,130,350380,307

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132910
B0142590
C0140710
D0162910

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6370270.423862%
B6371580.910375%
C63701251.962323%
D63701712.684458%

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 7490 6371 2 2 0.03% 0.03%
B 7491 6372 7 7 0.09% 0.11%
C 7490 6371 16 16 0.21% 0.25%
D 7490 6371 140 140 1.87% 2.20%

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 13 170 11792 66.95 824 807 164.1
A 13 254 10224 57.4 824 807 164.1
A 3 137 7246 39.24 824 807 164.1
B 3 64 265638 1714.54 816 796 154.5
B 12 111 18765 116.33 816 796 154.5
B 11 111 16655 102.67 816 796 154.5
C 0 239 128158 699.48 780 786 182.1
C 14 238 127513 695.94 780 786 182.1
C 0 207 100512 547.66 780 786 182.1
D 1 52 833149 4414.77 784 762 188.5
D 8 195 236950 1252.68 784 762 188.5
D 5 222 70983 372.43 784 762 188.5

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