ASTROSAT CZTI

Data Quality Report

Orbit 00631

Creation date: 2024-06-27T14:00:50.689282
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_116T01_9000000086_00631cztM0_level2.evt modeM0/AS1P01_116T01_9000000086_00631cztM0_level2_quad_clean.evt
Size (bytes)537,966,72049,279,680
Size513.0 MB 47.0 MB
Events in quadrant A3,936,661319,823
Events in quadrant B3,927,747322,975
Events in quadrant C3,617,204315,038
Events in quadrant D4,576,583286,524

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141541
B0141311
C0132311
D0161601

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0700
B0700
C0700
D0700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A349210.028637%
B349250.143184%
C349250.143184%
D349237110.624284%

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 3492 3492 55 55 1.58% 1.58%
B 3492 3492 44 44 1.26% 1.26%
C 3492 3492 26 26 0.74% 0.74%
D 3492 3492 489 489 14.00% 14.00%

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 0 238 34700 150.74 990 978 223.7
A 13 240 25056 107.63 990 978 223.7
A 13 160 21136 90.11 990 978 223.7
B 5 249 25835 102.83 1015 1021 241.3
B 4 250 6434 22.43 1015 1021 241.3
B 0 220 6210 21.5 1015 1021 241.3
C 9 52 72009 280.87 900 929 253.1
C 15 241 7072 24.27 900 929 253.1
C 9 83 5419 17.74 900 929 253.1
D 12 22 808991 3215.16 796 823 251.4
D 1 4 249428 989.03 796 823 251.4
D 12 237 131620 520.35 796 823 251.4

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