ASTROSAT CZTI

Data Quality Report

Orbit 27052

Creation date: 2024-06-27T19:35:56.089299
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_120T02_9000003904_27052cztM0_level2.evt modeM0/AS1A09_120T02_9000003904_27052cztM0_level2_quad_clean.evt
Size (bytes)695,534,40092,243,520
Size663.3 MB 88.0 MB
Events in quadrant A6,976,164532,979
Events in quadrant B6,950,630594,567
Events in quadrant C3,350,635635,859
Events in quadrant D3,385,989615,266

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0248160
B0245480
C0137870
D0139570

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5928158626.754386%
B5927178030.032057%
C59271031.737810%
D5927611.029188%

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 7208 5928 1287 1287 17.86% 21.71%
B 7206 5926 1522 1522 21.12% 25.68%
C 7207 5927 1 1 0.01% 0.02%
D 7207 5927 25 25 0.35% 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 14 235 4127095 28469.21 738 730 144.9
A 13 254 8695 54.95 738 730 144.9
A 0 226 6218 37.86 738 730 144.9
B 0 189 3891832 27360.25 756 743 142.2
B 3 112 45889 317.44 756 743 142.2
B 10 246 21673 147.17 756 743 142.2
C 14 238 133426 697.75 819 830 190.0
C 15 208 17297 86.65 819 830 190.0
C 13 61 5565 24.92 819 830 190.0
D 1 52 157447 800.91 820 804 195.6
D 2 250 66799 337.43 820 804 195.6
D 12 233 46300 232.62 820 804 195.6

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