ASTROSAT CZTI

Data Quality Report

Orbit 46476

Creation date: 2024-06-27T23:23:36.857402
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/AS1T05_203T01_9000006214_46476cztM0_level2.fits modeM0/AS1T05_203T01_9000006214_46476cztM0_level2_quad_clean.evt
Size (bytes)514,805,760112,118,400
Size491.0 MB 106.9 MB
Events in quadrant A6,593,156741,904
Events in quadrant B3,534,255778,884
Events in quadrant C3,427,415747,176
Events in quadrant D4,987,461664,950

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0236622
B0148263
C0146632
D0193022

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66303585.399698%
B66292794.208780%
C66291492.247700%
D66293895.868155%

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 7680 6630 11 11 0.14% 0.17%
B 7679 6629 63 63 0.82% 0.95%
C 7679 6629 12 12 0.16% 0.18%
D 7679 6629 202 202 2.63% 3.05%

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 10 83 3170295 19335.26 792 777 163.9
A 2 79 247091 1502.61 792 777 163.9
A 15 235 52367 314.72 792 777 163.9
B 5 32 300920 1898.34 798 772 158.1
B 15 201 20642 125.67 798 772 158.1
B 12 111 19926 121.14 798 772 158.1
C 3 233 221084 1188.36 790 793 185.4
C 9 54 86298 461.26 790 793 185.4
C 14 254 15290 78.2 790 793 185.4
D 1 52 1071269 5568.22 774 748 192.3
D 0 240 344156 1786.21 774 748 192.3
D 13 249 251080 1302.08 774 748 192.3

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