ASTROSAT CZTI

Data Quality Report

Orbit 11353

Creation date: 2024-06-27T16:11:43.517414
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/AS1G08_062T01_9000001660_11353cztM0_level2.evt modeM0/AS1G08_062T01_9000001660_11353cztM0_level2_quad_clean.evt
Size (bytes)662,529,60084,631,680
Size631.8 MB 80.7 MB
Events in quadrant A4,083,599510,491
Events in quadrant B5,587,091488,439
Events in quadrant C3,785,634515,727
Events in quadrant D6,055,566480,785

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0175883
B0221622
C0170202
D0235622

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81692713.317420%
B81697779.511568%
C81691341.640348%
D81695706.977598%

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 8444 8171 1 1 0.01% 0.01%
B 8444 8171 303 303 3.59% 3.71%
C 8444 8171 0 0 0.00% 0.00%
D 8444 8171 282 282 3.34% 3.45%

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 15 174 138968 684.69 983 961 201.6
A 13 251 54531 265.78 983 961 201.6
A 1 162 33828 163.06 983 961 201.6
B 4 239 1284922 6819.6 966 937 188.3
B 3 64 418611 2218.38 966 937 188.3
B 4 81 58134 303.79 966 937 188.3
C 13 61 7053 26.74 969 972 227.5
C 14 234 4266 14.48 969 972 227.5
C 8 222 2771 7.91 969 972 227.5
D 13 152 948437 4227.8 927 898 224.1
D 10 253 772081 3440.93 927 898 224.1
D 8 195 383626 1707.69 927 898 224.1

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