ASTROSAT CZTI

Data Quality Report

Orbit 00201

Creation date: 2024-06-27T13:57:48.251013
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_140T01_9000000018_00201cztM0_level2.evt modeM0/AS1P01_140T01_9000000018_00201cztM0_level2_quad_clean.evt
Size (bytes)933,298,56082,054,080
Size890.1 MB 78.3 MB
Events in quadrant A7,247,019524,461
Events in quadrant B6,930,378532,450
Events in quadrant C6,473,660519,174
Events in quadrant D7,224,331498,621

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0256812
B0247581
C0234291
D0256281

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5874290.493701%
B587420.034048%
C587420.034048%
D5874500.851209%

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 7466 5876 329 329 4.41% 5.60%
B 7466 5876 85 85 1.14% 1.45%
C 7466 5876 49 49 0.66% 0.83%
D 7466 5876 253 253 3.39% 4.31%

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 6 359828 934.75 1766 1749 383.1
A 0 253 25526 62.07 1766 1749 383.1
A 5 244 13900 31.72 1766 1749 383.1
B 5 47 58860 138.92 1776 1782 410.9
B 0 120 19569 43.29 1776 1782 410.9
B 5 85 14123 30.04 1776 1782 410.9
C 10 38 14352 27.61 1638 1699 458.3
C 9 162 9125 16.2 1638 1699 458.3
C 10 21 6623 10.74 1638 1699 458.3
D 1 4 236971 484.06 1614 1666 486.1
D 10 182 117282 237.84 1614 1666 486.1
D 14 23 106409 215.47 1614 1666 486.1

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