ASTROSAT CZTI

Data Quality Report

Orbit 53169

Creation date: 2025-07-31T14:49:39.153154
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_9000006490_53169cztM0_level2.fits modeM0/AS1C09_011T06_9000006490_53169cztM0_level2_quad_clean.evt
Size (bytes)1,208,361,60075,113,280
Size1.1 GB 71.6 MB
Events in quadrant A9,587,365513,718
Events in quadrant B4,649,496731,167
Events in quadrant C10,505,391477,166
Events in quadrant D19,408,34729,533

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0337390
B0192600
C0364000
D0629070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7505209927.968021%
B75062823.756994%
C7506241432.160938%
D7505724196.482345%

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 7505 7505 1965 1965 26.18% 26.18%
B 7506 7506 155 155 2.07% 2.07%
C 7506 7506 2016 2016 26.86% 26.86%
D 7504 7504 6938 6938 92.46% 92.46%

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 12 3 3859539 24009.6 645 628 160.7
A 0 8 1186735 7379.79 645 628 160.7
A 12 80 776662 4828.37 645 628 160.7
B 10 191 526037 3281.42 752 726 160.1
B 1 239 343101 2138.69 752 726 160.1
B 2 249 321995 2006.85 752 726 160.1
C 4 5 2059184 11956.19 627 618 172.2
C 0 240 2015940 11705.03 627 618 172.2
C 1 241 1657152 9621.18 627 618 172.2
D 15 125 17226695 204349.11 288 273 84.3
D 12 3 523689 6209.04 288 273 84.3
D 2 249 307013 3638.72 288 273 84.3

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