ASTROSAT CZTI

Data Quality Report

Orbit 01247

Creation date: 2024-06-27T14:09:47.551163
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_011T02_9000000226_01247cztM0_level2.evt modeM0/AS1G04_011T02_9000000226_01247cztM0_level2_quad_clean.evt
Size (bytes)1,209,859,20099,783,360
Size1.1 GB 95.2 MB
Events in quadrant A8,088,940664,801
Events in quadrant B11,920,194599,489
Events in quadrant C8,000,745658,035
Events in quadrant D8,200,826644,789

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0286412
B0401261
C0284081
D0290141

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6514310.475898%
B6514107216.456862%
C6514280.429843%
D65141582.425545%

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 7214 6514 264 264 3.66% 4.05%
B 7213 6513 2122 2122 29.42% 32.58%
C 7213 6513 272 272 3.77% 4.18%
D 7213 6513 520 520 7.21% 7.98%

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 3 80 280253 572.72 2027 2039 485.8
A 12 243 14864 26.4 2027 2039 485.8
A 8 14 11788 20.07 2027 2039 485.8
B 2 32 3384654 7343.35 1958 1967 460.6
B 8 4 352855 761.73 1958 1967 460.6
B 5 191 298927 644.66 1958 1967 460.6
C 15 241 340641 631.31 1929 1998 536.4
C 9 52 51475 92.24 1929 1998 536.4
C 5 234 27829 48.15 1929 1998 536.4
D 10 84 812256 1409.52 1864 1930 574.9
D 2 88 265517 458.49 1864 1930 574.9
D 10 125 99423 169.58 1864 1930 574.9

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