ASTROSAT CZTI

Data Quality Report

Orbit 00128

Creation date: 2024-06-27T13:56:45.392721
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/AS1P01_003T01_9000000002_00128cztM0_level2.evt modeM0/AS1P01_003T01_9000000002_00128cztM0_level2_quad_clean.evt
Size (bytes)954,054,72071,576,640
Size909.9 MB 68.3 MB
Events in quadrant A6,970,321443,359
Events in quadrant B7,214,906453,240
Events in quadrant C6,542,222447,303
Events in quadrant D7,798,858435,060

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0246412
B0253741
C0233801
D0271061

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A555250.090058%
B5552300.540346%
C555240.072046%
D5552931.675072%

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 7174 5554 209 209 2.91% 3.76%
B 7174 5554 257 257 3.58% 4.63%
C 7174 5554 99 99 1.38% 1.78%
D 7174 5554 625 625 8.71% 11.25%

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 86 14302 43.52 1774 1735 288.8
A 13 65 12501 37.28 1774 1735 288.8
A 13 239 9711 27.62 1774 1735 288.8
B 10 48 96115 240.76 1775 1781 391.8
B 0 235 66453 165.05 1775 1781 391.8
B 8 236 51233 126.21 1775 1781 391.8
C 10 254 84171 182.62 1628 1689 451.7
C 5 253 15323 30.19 1628 1689 451.7
C 2 192 13822 26.86 1628 1689 451.7
D 10 244 391730 865.07 1700 1715 450.8
D 13 207 137856 301.97 1700 1715 450.8
D 5 254 123335 269.76 1700 1715 450.8

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