ASTROSAT CZTI

Data Quality Report

Orbit 06803

Creation date: 2024-06-27T15:11:51.181586
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/AS1G06_086T02_9000000936_06803cztM0_level2.evt modeM0/AS1G06_086T02_9000000936_06803cztM0_level2_quad_clean.evt
Size (bytes)490,844,16080,893,440
Size468.1 MB 77.1 MB
Events in quadrant A3,204,761513,858
Events in quadrant B3,840,716510,029
Events in quadrant C3,270,978505,164
Events in quadrant D4,117,094476,845

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136103
B0155262
C0136162
D0165312

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63601271.996855%
B63603074.827044%
C6360781.226415%
D63602353.694969%

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 7625 6361 1 1 0.01% 0.02%
B 7625 6361 96 96 1.26% 1.51%
C 7625 6361 1 1 0.01% 0.02%
D 7625 6361 123 123 1.61% 1.93%

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 13 248 15774 90.01 825 809 166.3
A 0 226 7997 43.23 825 809 166.3
A 12 194 7567 40.65 825 809 166.3
B 4 81 420670 2689.73 822 805 156.1
B 11 51 88399 561.14 822 805 156.1
B 3 220 73241 464.04 822 805 156.1
C 9 247 144208 782.74 793 800 183.2
C 12 16 29207 155.05 793 800 183.2
C 13 61 6322 30.14 793 800 183.2
D 2 216 455281 2363.92 784 760 192.3
D 8 195 296694 1539.13 784 760 192.3
D 2 33 139911 723.71 784 760 192.3

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