ASTROSAT CZTI

Data Quality Report

Orbit 20170830_G07_057T02_9000001504_level2

Creation date: 2025-11-16T22:34:42.361430
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/AS1G07_057T02_9000001504cztM0_level2.fits modeM0/AS1G07_057T02_9000001504cztM0_level2_quad_clean.evt
Size (bytes)519,111,360371,669,760
Size495.1 MB 354.5 MB
Events in quadrant A5,202,5202,644,304
Events in quadrant B2,787,1682,004,035
Events in quadrant C2,496,3041,840,085
Events in quadrant D2,254,5501,792,581

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0894750
B0922120
C0884730
D01127100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0970
B0970
C0960
D0970

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08800
B09340
C09530
D09390

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A431003200.742459%
B413166051.464324%
C434432010.462675%
D454855361.178410%

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 69738 50913 0 0 0.00% 0.00%
B 69737 49410 0 0 0.00% 0.00%
C 69738 51157 0 0 0.00% 0.00%
D 69738 50377 0 0 0.00% 0.00%

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 29 2984 6.17 1370 1334 267.6
A -1 -1 -1 -1.0 1370 1334 267.6
A -1 -1 -1 -1.0 1370 1334 267.6
B 2 9 2024 9.59 740 709 137.2
B 12 226 1665 6.97 740 709 137.2
B 5 232 1626 6.69 740 709 137.2
C 1 80 1896 7.42 659 614 172.8
C 1 81 1846 7.13 659 614 172.8
C 2 191 1674 6.13 659 614 172.8
D 6 67 1635 6.07 642 584 173.2
D 6 231 1602 5.88 642 584 173.2
D 3 14 1597 5.85 642 584 173.2

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