ASTROSAT CZTI

Data Quality Report

Orbit 01315

Creation date: 2024-06-27T14:10:51.368993
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_002T02_9000000230_01315cztM0_level2.evt modeM0/AS1G04_002T02_9000000230_01315cztM0_level2_quad_clean.evt
Size (bytes)1,046,543,04098,928,000
Size998.1 MB 94.3 MB
Events in quadrant A7,624,418644,472
Events in quadrant B7,918,359653,550
Events in quadrant C7,431,616644,195
Events in quadrant D8,305,045616,401

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270933
B0279622
C0265262
D0291442

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6264180.287356%
B6264380.606641%
C626460.095785%
D62642894.613665%

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 7489 6265 238 238 3.18% 3.80%
B 7489 6265 281 281 3.75% 4.49%
C 7489 6265 163 163 2.18% 2.60%
D 7489 6264 774 774 10.34% 12.36%

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 4 32 413900 921.74 1872 1882 447.0
A 0 128 16963 33.74 1872 1882 447.0
A 13 235 7317 12.16 1872 1882 447.0
B 0 220 108642 235.08 1963 1971 453.8
B 5 249 85549 184.19 1963 1971 453.8
B 8 4 82631 177.76 1963 1971 453.8
C 15 241 303420 598.81 1811 1877 503.6
C 3 111 19812 35.62 1811 1877 503.6
C 9 52 14606 25.28 1811 1877 503.6
D 10 84 1428669 2700.09 1715 1776 528.5
D 12 22 263569 495.39 1715 1776 528.5
D 15 13 112724 209.94 1715 1776 528.5

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