ASTROSAT CZTI

Data Quality Report

Orbit 25270

Creation date: 2024-06-27T19:15:44.606979
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_027T02_9000003696_25270cztM0_level2.evt modeM0/AS1A09_027T02_9000003696_25270cztM0_level2_quad_clean.evt
Size (bytes)490,795,200121,302,720
Size468.1 MB 115.7 MB
Events in quadrant A2,994,525843,706
Events in quadrant B3,230,254840,521
Events in quadrant C3,490,019785,726
Events in quadrant D4,738,968781,934

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127660
B0134130
C0143380
D0183520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6042590.976498%
B60431151.903028%
C60431272.101605%
D60431402.316730%

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 7177 6043 1 1 0.01% 0.02%
B 7178 6044 38 38 0.53% 0.63%
C 7178 6044 13 13 0.18% 0.22%
D 7178 6044 71 71 0.99% 1.17%

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 13 254 9341 55.49 772 756 154.7
A 11 208 8298 48.75 772 756 154.7
A 7 16 7418 43.06 772 756 154.7
B 3 64 192103 1358.9 753 736 140.8
B 0 190 66986 470.44 753 736 140.8
B 12 111 16137 109.36 753 736 140.8
C 0 207 284086 1709.01 721 726 165.8
C 3 233 146622 879.93 721 726 165.8
C 14 238 117450 703.99 721 726 165.8
D 1 52 1270733 7075.43 740 718 179.5
D 8 195 460175 2559.7 740 718 179.5
D 12 235 99110 548.16 740 718 179.5

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