ASTROSAT CZTI

Data Quality Report

Orbit 51951

Creation date: 2025-05-06T15:43:56.171363
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/AS1C09_011T06_9000006468_51951cztM0_level2.fits modeM0/AS1C09_011T06_9000006468_51951cztM0_level2_quad_clean.evt
Size (bytes)1,010,540,16088,237,440
Size963.7 MB 84.1 MB
Events in quadrant A8,975,433563,364
Events in quadrant B4,123,050752,793
Events in quadrant C12,390,300406,935
Events in quadrant D11,325,409414,144

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0319180
B0177350
C0420430
D0390420

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7669169522.101969%
B76701251.629726%
C7670345245.006519%
D7670288537.614081%

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 7669 7669 1352 1352 17.63% 17.63%
B 7670 7670 56 56 0.73% 0.73%
C 7670 7670 2784 2784 36.30% 36.30%
D 7670 7670 2426 2426 31.63% 31.63%

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 7 64 2472616 14043.2 710 692 176.0
A 4 159 2191180 12444.34 710 692 176.0
A 4 249 345660 1959.79 710 692 176.0
B 4 81 151359 894.26 781 754 168.4
B 4 201 100236 590.7 781 754 168.4
B 10 44 68291 401.02 781 754 168.4
C 15 224 5528793 33773.9 589 585 163.7
C 13 3 2959564 18077.51 589 585 163.7
C 4 5 711978 4346.17 589 585 163.7
D 12 16 5088501 29613.27 599 569 171.8
D 6 42 1431668 8329.42 599 569 171.8
D 7 60 949462 5522.84 599 569 171.8

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