ASTROSAT CZTI

Data Quality Report

Orbit 37269

Creation date: 2024-06-27T21:37:41.606820
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/AS1A10_103T03_9000005296_37269cztM0_level2.evt modeM0/AS1A10_103T03_9000005296_37269cztM0_level2_quad_clean.evt
Size (bytes)421,695,36083,638,080
Size402.2 MB 79.8 MB
Events in quadrant A3,045,959551,856
Events in quadrant B3,279,039527,694
Events in quadrant C2,968,757532,993
Events in quadrant D3,089,371521,163

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130543
B0135842
C0123932
D0134742

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5708621.086195%
B57081021.786966%
C5708601.051156%
D57081091.909601%

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 7290 5709 52 52 0.71% 0.91%
B 7290 5709 61 61 0.84% 1.07%
C 7290 5709 53 53 0.73% 0.93%
D 7290 5709 106 106 1.45% 1.86%

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 10 83 269602 2039.58 649 637 131.9
A 15 237 129062 973.86 649 637 131.9
A 13 248 90969 685.0 649 637 131.9
B 5 172 298645 2439.17 636 620 122.2
B 0 213 298093 2434.65 636 620 122.2
B 0 190 64979 526.74 636 620 122.2
C 15 214 242220 1645.68 630 635 146.8
C 0 10 183629 1246.56 630 635 146.8
C 14 254 80820 546.22 630 635 146.8
D 2 153 208330 1321.47 630 614 157.2
D 12 218 132586 839.59 630 614 157.2
D 13 249 82184 518.94 630 614 157.2

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