ASTROSAT CZTI

Data Quality Report

Orbit 26904

Creation date: 2024-06-27T19:34:18.103289
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_044T01_9000003888_26904cztM0_level2.evt modeM0/AS1A09_044T01_9000003888_26904cztM0_level2_quad_clean.evt
Size (bytes)595,497,60093,381,120
Size567.9 MB 89.1 MB
Events in quadrant A3,358,697611,052
Events in quadrant B4,488,951614,595
Events in quadrant C3,140,802603,012
Events in quadrant D6,606,516546,034

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140220
B0176470
C0133760
D0241260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6501380.584525%
B65014276.568220%
C6501530.815259%
D650173411.290571%

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 7546 6502 15 15 0.20% 0.23%
B 7546 6501 283 283 3.75% 4.35%
C 7546 6502 0 0 0.00% 0.00%
D 7546 6502 687 687 9.10% 10.57%

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 13 200835 1242.3 800 785 161.0
A 5 168 50673 309.8 800 785 161.0
A 12 189 21861 130.88 800 785 161.0
B 3 64 946888 6405.44 780 761 147.7
B 10 246 222155 1498.87 780 761 147.7
B 0 190 194007 1308.31 780 761 147.7
C 14 238 120413 664.31 766 774 180.1
C 8 128 10181 52.23 766 774 180.1
C 15 208 9211 46.85 766 774 180.1
D 1 52 1914445 10597.36 725 709 180.6
D 7 80 722918 3999.25 725 709 180.6
D 11 176 475416 2628.7 725 709 180.6

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