ASTROSAT CZTI

Data Quality Report

Orbit 17671

Creation date: 2024-06-27T17:39:19.897552
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_208T01_9000002614_17671cztM0_level2.evt modeM0/AS1A05_208T01_9000002614_17671cztM0_level2_quad_clean.evt
Size (bytes)458,075,520103,210,560
Size436.9 MB 98.4 MB
Events in quadrant A3,163,159677,943
Events in quadrant B3,304,711701,997
Events in quadrant C3,437,034662,465
Events in quadrant D3,537,672641,285

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134742
B0139653
C0142112
D0147802

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6338340.536447%
B6337811.278207%
C6337661.041502%
D63371131.783178%

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 7563 6339 0 0 0.00% 0.00%
B 7562 6338 7 7 0.09% 0.11%
C 7562 6338 0 0 0.00% 0.00%
D 7562 6338 46 46 0.61% 0.73%

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 8 205 49297 295.36 807 792 164.2
A 4 2 9355 52.14 807 792 164.2
A 0 226 7123 38.55 807 792 164.2
B 10 245 69139 445.43 812 796 153.4
B 0 189 28750 182.19 812 796 153.4
B 12 111 18053 112.47 812 796 153.4
C 3 233 238886 1312.48 777 783 181.4
C 14 238 121988 668.11 777 783 181.4
C 9 54 27933 149.66 777 783 181.4
D 5 222 432781 2310.88 771 751 187.0
D 7 238 133719 711.23 771 751 187.0
D 2 234 26573 138.12 771 751 187.0

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