ASTROSAT CZTI

Data Quality Report

Orbit 01123

Creation date: 2024-06-27T14:07:53.264439
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_997T01_9000000214_01123cztM0_level2.evt modeM0/AS1P01_997T01_9000000214_01123cztM0_level2_quad_clean.evt
Size (bytes)1,024,482,24098,078,400
Size977.0 MB 93.5 MB
Events in quadrant A7,597,498635,208
Events in quadrant B8,149,669634,022
Events in quadrant C8,083,632620,035
Events in quadrant D6,756,921620,231

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0273082
B0289041
C0287041
D0247951

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A661010.015129%
B6610100.151286%
C6610400.605144%
D661010.015129%

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 7510 6611 112 112 1.49% 1.69%
B 7510 6611 168 168 2.24% 2.54%
C 7510 6611 232 232 3.09% 3.51%
D 7510 6611 45 45 0.60% 0.68%

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 11 79 8301 13.24 1977 1997 476.1
A 12 251 8043 12.7 1977 1997 476.1
A 3 111 6394 9.23 1977 1997 476.1
B 0 216 76025 151.68 2080 2089 487.4
B 15 22 40093 77.97 2080 2089 487.4
B 0 190 34121 65.71 2080 2089 487.4
C 15 241 336922 635.55 1884 1951 527.1
C 9 54 183666 344.77 1884 1951 527.1
C 5 234 162709 305.01 1884 1951 527.1
D 10 125 23940 39.74 1798 1855 555.7
D 2 16 10385 15.35 1798 1855 555.7
D 13 189 8522 12.0 1798 1855 555.7

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