ASTROSAT CZTI

Data Quality Report

Orbit 11838

Creation date: 2024-06-27T16:18:58.303035
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/AS1A04_088T03_9000001750_11838cztM0_level2.evt modeM0/AS1A04_088T03_9000001750_11838cztM0_level2_quad_clean.evt
Size (bytes)541,742,400100,238,400
Size516.6 MB 95.6 MB
Events in quadrant A3,361,794666,036
Events in quadrant B5,683,590630,330
Events in quadrant C3,216,007651,686
Events in quadrant D3,693,386622,988

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143883
B0214042
C0141952
D0155532

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6666240.360036%
B666678111.716172%
C6666711.065107%
D6666931.395140%

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 9142 6669 1 1 0.01% 0.01%
B 9142 6669 578 578 6.32% 8.67%
C 9142 6669 13 13 0.14% 0.19%
D 9142 6669 51 51 0.56% 0.76%

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 1 162 70812 424.17 817 800 165.1
A 13 251 54672 326.39 817 800 165.1
A 1 178 33286 196.82 817 800 165.1
B 3 64 1649368 11177.56 790 770 147.5
B 4 239 549945 3723.43 790 770 147.5
B 15 204 304689 2060.58 790 770 147.5
C 7 238 94246 514.73 794 799 181.5
C 0 10 20897 110.7 794 799 181.5
C 13 61 5990 28.59 794 799 181.5
D 8 195 280073 1395.87 776 759 200.1
D 12 17 137358 682.65 776 759 200.1
D 13 249 78799 390.01 776 759 200.1

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