ASTROSAT CZTI

Data Quality Report

Orbit 16852

Creation date: 2024-06-27T17:28:39.056813
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_056T01_9000002498_16852cztM0_level2.evt modeM0/AS1A05_056T01_9000002498_16852cztM0_level2_quad_clean.evt
Size (bytes)489,568,32097,643,520
Size466.9 MB 93.1 MB
Events in quadrant A3,593,535628,629
Events in quadrant B3,919,686636,730
Events in quadrant C3,347,313604,646
Events in quadrant D3,491,822600,486

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153592
B0161191
C0144701
D0153421

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6984420.601375%
B69841001.431844%
C6984630.902062%
D6984680.973654%

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 7385 6986 2 2 0.03% 0.03%
B 7385 6986 31 31 0.42% 0.44%
C 7385 6986 2 2 0.03% 0.03%
D 7385 6986 29 29 0.39% 0.42%

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 0 23 358170 2115.52 836 819 168.9
A 0 226 28419 163.39 836 819 168.9
A 3 137 6310 32.51 836 819 168.9
B 10 16 498560 3084.14 834 813 161.4
B 0 229 73395 449.73 834 813 161.4
B 15 35 68159 417.29 834 813 161.4
C 14 238 123464 656.85 798 805 186.7
C 0 207 87523 464.38 798 805 186.7
C 3 233 23335 120.65 798 805 186.7
D 1 52 251590 1280.4 805 785 195.9
D 5 222 124007 629.07 805 785 195.9
D 10 70 52648 264.77 805 785 195.9

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