ASTROSAT CZTI

Data Quality Report

Orbit 20240501_T05_203T01_9000006214_level2

Creation date: 2024-05-03T09:09:47.980993
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/AS1T05_203T01_9000006214cztM0_level2.fits modeM0/AS1T05_203T01_9000006214cztM0_level2_quad_clean.evt
Size (bytes)535,654,080510,848,640
Size510.8 MB 487.2 MB
Events in quadrant A3,130,1462,905,107
Events in quadrant B3,109,6163,052,808
Events in quadrant C3,212,5662,911,373
Events in quadrant D2,675,8902,509,777

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012140
B012140
C012140
D012140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0840
B0840
C0840
D0840

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02139740
B01317820
C01264110
D01716210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5963226014.361752%
B5963213472.258854%
C596325480.918970%
D5963235295.917964%

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 68137 59626 0 0 0.00% 0.00%
B 68137 59627 0 0 0.00% 0.00%
C 68137 59630 0 0 0.00% 0.00%
D 68137 59575 0 0 0.00% 0.00%

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 7 110 2507 8.28 817 763 210.6
A 0 29 2419 7.86 817 763 210.6
A 14 95 2383 7.69 817 763 210.6
B 2 9 3008 13.58 821 781 164.0
B 2 8 2388 9.8 821 781 164.0
B 3 17 2155 8.38 821 781 164.0
C 1 81 2402 7.34 849 789 219.6
C 1 80 2334 7.03 849 789 219.6
C 3 202 2327 7.0 849 789 219.6
D 10 189 1963 6.05 769 701 208.5
D 15 47 1924 5.87 769 701 208.5
D 6 38 1893 5.72 769 701 208.5

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