ASTROSAT CZTI

Data Quality Report

Orbit 01196

Creation date: 2024-06-27T14:08:59.358865
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_007T02_9000000220_01196cztM0_level2.evt modeM0/AS1G04_007T02_9000000220_01196cztM0_level2_quad_clean.evt
Size (bytes)1,069,577,280101,707,200
Size1020.0 MB 97.0 MB
Events in quadrant A7,685,665669,533
Events in quadrant B8,307,622658,360
Events in quadrant C7,908,072649,195
Events in quadrant D8,050,025639,537

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0276073
B0294292
C0281922
D0286762

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A664650.075233%
B6646150.225700%
C6646110.165513%
D66461392.091484%

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 7600 6645 147 147 1.93% 2.21%
B 7600 6645 234 234 3.08% 3.52%
C 7600 6645 163 163 2.14% 2.45%
D 7600 6645 654 654 8.61% 9.84%

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 29033 56.83 1991 2001 475.6
A 12 243 14149 25.54 1991 2001 475.6
A 11 79 9503 15.77 1991 2001 475.6
B 6 53 239871 478.8 2096 2100 496.6
B 5 191 21472 39.01 2096 2100 496.6
B 7 221 19945 35.93 2096 2100 496.6
C 15 241 365393 683.27 1912 1985 531.9
C 3 111 25406 44.04 1912 1985 531.9
C 3 79 19855 33.6 1912 1985 531.9
D 1 239 646273 1138.14 1832 1899 566.2
D 13 169 177865 310.8 1832 1899 566.2
D 12 22 162907 284.38 1832 1899 566.2

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