ASTROSAT CZTI

Data Quality Report

Orbit 38869

Creation date: 2024-06-27T21:57:28.838708
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/AS1A12_077T06_9000005408_38869cztM0_level2.fits modeM0/AS1A12_077T06_9000005408_38869cztM0_level2_quad_clean.evt
Size (bytes)388,509,12089,400,960
Size370.5 MB 85.3 MB
Events in quadrant A2,851,047616,696
Events in quadrant B2,616,398639,973
Events in quadrant C2,455,422610,665
Events in quadrant D6,058,099479,405

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0371
D0360

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117113
B0111142
C0104865
D0215889

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5146120.233191%
B5146320.621842%
C514470.136081%
D514493018.079316%

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 7239 5147 5 5 0.07% 0.10%
B 7239 5147 19 19 0.26% 0.37%
C 7239 5146 3 3 0.04% 0.06%
D 7238 5145 955 955 13.19% 18.56%

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 10 83 392636 3357.5 579 569 116.8
A 13 248 203055 1734.01 579 569 116.8
A 13 254 8118 64.65 579 569 116.8
B 4 171 198732 1771.36 579 564 111.9
B 4 251 99119 880.95 579 564 111.9
B 0 230 22577 196.77 579 564 111.9
C 15 214 213618 1603.67 568 571 132.8
C 0 10 18243 133.02 568 571 132.8
C 14 254 5821 39.51 568 571 132.8
D 2 250 1854271 14538.09 523 510 127.5
D 12 227 1674112 13125.19 523 510 127.5
D 5 222 168003 1313.56 523 510 127.5

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