ASTROSAT CZTI

Data Quality Report

Orbit 50788

Creation date: 2025-02-17T08:06:55.318231
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/AS1C07_001T01_9000006450_50788cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50788cztM0_level2_quad_clean.evt
Size (bytes)870,523,20095,895,360
Size830.2 MB 91.5 MB
Events in quadrant A4,418,068710,228
Events in quadrant B3,667,470779,656
Events in quadrant C16,549,139279,827
Events in quadrant D6,990,915596,317

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0186080
B0166280
C0544360
D0262250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77231051.359575%
B7723350.453192%
C7723514666.632138%
D772379210.255082%

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 7723 7723 73 73 0.95% 0.95%
B 7723 7723 12 12 0.16% 0.16%
C 7723 7723 4601 4601 59.58% 59.58%
D 7723 7723 729 729 9.44% 9.44%

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 4 249 237989 1186.53 801 782 199.9
A 9 13 150412 748.46 801 782 199.9
A 5 240 97305 482.81 801 782 199.9
B 7 0 129563 741.49 807 779 173.7
B 0 171 44237 250.21 807 779 173.7
B 7 252 35499 199.9 807 779 173.7
C 5 10 11285210 68531.56 592 587 164.7
C 4 5 1527747 9274.45 592 587 164.7
C 12 247 335756 2035.48 592 587 164.7
D 2 216 1555723 7399.99 749 721 210.1
D 11 245 406753 1932.24 749 721 210.1
D 2 249 259514 1231.55 749 721 210.1

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