ASTROSAT CZTI

Data Quality Report

Orbit 01372

Creation date: 2024-06-27T14:11:41.863988
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/AS1G04_014T02_9000000232_01372cztM0_level2.evt modeM0/AS1G04_014T02_9000000232_01372cztM0_level2_quad_clean.evt
Size (bytes)1,157,454,72094,898,880
Size1.1 GB 90.5 MB
Events in quadrant A8,121,167634,855
Events in quadrant B7,930,286644,775
Events in quadrant C7,557,800628,103
Events in quadrant D11,026,379524,518

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0285912
B0280461
C0269151
D0375521

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6316630.997467%
B6316230.364155%
C6316320.506650%
D6316178428.245725%

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 7401 6316 363 363 4.90% 5.75%
B 7401 6316 217 217 2.93% 3.44%
C 7401 6316 161 161 2.18% 2.55%
D 7401 6316 2136 2136 28.86% 33.82%

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 15 127 410714 887.16 1933 1948 460.8
A 4 32 121504 259.48 1933 1948 460.8
A 12 243 74926 158.39 1933 1948 460.8
B 6 53 78972 162.24 2020 2024 474.3
B 8 4 65747 134.35 2020 2024 474.3
B 15 22 38288 76.46 2020 2024 474.3
C 15 241 203577 392.03 1858 1925 514.4
C 10 19 35038 64.37 1858 1925 514.4
C 7 222 21570 38.19 1858 1925 514.4
D 9 53 4873603 10035.38 1569 1627 485.5
D 13 73 150871 307.42 1569 1627 485.5
D 10 125 110261 223.77 1569 1627 485.5

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