ASTROSAT CZTI

Data Quality Report

Orbit 18787

Creation date: 2024-06-27T17:54:42.556133
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/AS1A05_024T01_9000002810_18787cztM0_level2.evt modeM0/AS1A05_024T01_9000002810_18787cztM0_level2_quad_clean.evt
Size (bytes)438,739,20074,381,760
Size418.4 MB 70.9 MB
Events in quadrant A3,228,687468,093
Events in quadrant B3,275,502473,660
Events in quadrant C3,212,272453,143
Events in quadrant D3,168,694443,702

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132561
B0133691
C0132071
D0129992

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5914941.589449%
B5915961.622992%
C59151171.978022%
D5914771.301995%

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 7189 5915 12 12 0.17% 0.20%
B 7190 5916 8 8 0.11% 0.14%
C 7190 5916 3 3 0.04% 0.05%
D 7189 5915 10 10 0.14% 0.17%

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 6 16 88932 548.61 814 798 160.7
A 13 254 9317 53.03 814 798 160.7
A 0 226 7407 41.14 814 798 160.7
B 7 220 93845 625.7 803 785 148.7
B 0 197 24052 156.44 803 785 148.7
B 12 111 16724 107.17 803 785 148.7
C 14 238 123646 683.69 780 787 179.7
C 9 54 28377 153.53 780 787 179.7
C 6 96 11964 62.2 780 787 179.7
D 7 238 107058 555.73 793 769 191.3
D 7 96 32121 163.92 793 769 191.3
D 2 234 24559 124.38 793 769 191.3

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