ASTROSAT CZTI

Data Quality Report

Orbit 04018

Creation date: 2024-06-27T14:36:23.839166
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/AS1G05_173T01_9000000514_04018cztM0_level2.evt modeM0/AS1G05_173T01_9000000514_04018cztM0_level2_quad_clean.evt
Size (bytes)462,729,60079,200,000
Size441.3 MB 75.5 MB
Events in quadrant A3,476,787485,886
Events in quadrant B3,321,608487,010
Events in quadrant C2,996,371484,454
Events in quadrant D3,753,142463,191

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150483
B0143852
C0139202
D0162952

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68491101.606074%
B6849460.671631%
C6849150.219010%
D68492253.285151%

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 7684 6850 42 42 0.55% 0.61%
B 7684 6850 4 4 0.05% 0.06%
C 7684 6850 1 1 0.01% 0.01%
D 7684 6850 151 151 1.97% 2.20%

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 50 261242 1621.7 783 766 160.6
A 0 118 114608 708.77 783 766 160.6
A 12 247 59029 362.74 783 766 160.6
B 15 204 99893 647.76 788 768 153.0
B 4 81 67728 437.57 788 768 153.0
B 14 167 59440 383.41 788 768 153.0
C 8 128 17544 94.95 752 754 176.8
C 9 144 14377 77.04 752 754 176.8
C 8 112 8499 43.8 752 754 176.8
D 2 232 727391 3985.53 748 726 182.3
D 12 110 85997 467.68 748 726 182.3
D 13 137 33036 177.21 748 726 182.3

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