ASTROSAT CZTI

Data Quality Report

Orbit 52670

Creation date: 2025-06-24T01:04:54.855779
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_011T07_9000006480_52670cztM0_level2.fits modeM0/AS1C09_011T07_9000006480_52670cztM0_level2_quad_clean.evt
Size (bytes)761,031,36078,013,440
Size725.8 MB 74.4 MB
Events in quadrant A4,621,707574,602
Events in quadrant B6,891,419563,116
Events in quadrant C5,591,033505,746
Events in quadrant D10,607,078302,866

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0179391
B0245721
C0207061
D0356721

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59501312.201681%
B595179113.291884%
C595168511.510670%
D5951284847.857503%

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 7090 5950 41 41 0.58% 0.69%
B 7091 5951 670 670 9.45% 11.26%
C 7091 5951 618 618 8.72% 10.38%
D 7091 5951 2901 2901 40.91% 48.75%

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 3 14 1663300 10690.37 620 604 155.5
A 12 80 135002 864.12 620 604 155.5
A 11 7 50348 319.83 620 604 155.5
B 10 128 3338182 26452.9 596 577 126.2
B 2 249 594925 4710.63 596 577 126.2
B 10 254 159839 1262.27 596 577 126.2
C 15 248 1314444 8040.29 588 581 163.4
C 13 3 883245 5401.53 588 581 163.4
C 15 160 250496 1529.37 588 581 163.4
D 6 42 5654447 40619.65 475 452 139.2
D 3 12 918803 6597.65 475 452 139.2
D 8 176 846015 6074.72 475 452 139.2

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