ASTROSAT CZTI

Data Quality Report

Orbit 33869

Creation date: 2024-06-27T20:53:29.128273
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/AS1A11_046T03_9000004834_33869cztM0_level2.evt modeM0/AS1A11_046T03_9000004834_33869cztM0_level2_quad_clean.evt
Size (bytes)438,632,64069,428,160
Size418.3 MB 66.2 MB
Events in quadrant A2,484,139443,101
Events in quadrant B3,028,548445,337
Events in quadrant C2,829,036439,147
Events in quadrant D4,585,506406,600

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106962
B0122831
C0113551
D0172521

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A525270.133283%
B52521212.303884%
C5252410.780655%
D52522033.865194%

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 7045 5253 0 0 0.00% 0.00%
B 7045 5253 69 69 0.98% 1.31%
C 7045 5253 31 31 0.44% 0.59%
D 7045 5253 206 206 2.92% 3.92%

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 7 16 39438 306.32 627 615 126.7
A 13 6 14862 112.41 627 615 126.7
A 13 254 8303 60.66 627 615 126.7
B 5 172 463334 3967.31 614 599 116.6
B 15 85 30166 253.5 614 599 116.6
B 4 232 24630 206.03 614 599 116.6
C 15 214 225518 1605.44 603 606 140.1
C 0 10 96540 684.78 603 606 140.1
C 9 187 55698 393.25 603 606 140.1
D 8 195 1001117 6801.46 599 580 147.1
D 12 235 520843 3536.65 599 580 147.1
D 2 250 266463 1807.42 599 580 147.1

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