ASTROSAT CZTI

Data Quality Report

Orbit 39597

Creation date: 2024-06-27T22:06:37.459777
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/AS1A12_018T01_9000005488_39597cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39597cztM0_level2_quad_clean.evt
Size (bytes)469,198,08096,053,760
Size447.5 MB 91.6 MB
Events in quadrant A4,064,736633,105
Events in quadrant B3,064,926669,688
Events in quadrant C6,412,974600,542
Events in quadrant D3,354,870581,375

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158323
B0134572
C0233142
D0144772

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60623065.047839%
B6062951.567140%
C60626049.963708%
D60621772.919828%

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 8716 6064 273 273 3.13% 4.50%
B 8716 6064 56 56 0.64% 0.92%
C 8716 6064 592 592 6.79% 9.76%
D 8716 6064 137 137 1.57% 2.26%

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 9 143 1092332 8394.73 636 623 130.0
A 10 83 467351 3588.92 636 623 130.0
A 15 222 29768 224.11 636 623 130.0
B 5 255 388210 3167.06 639 620 122.4
B 5 172 139291 1133.1 639 620 122.4
B 0 230 18229 143.89 639 620 122.4
C 9 187 2180077 15152.78 612 614 143.8
C 15 208 1566870 10889.44 612 614 143.8
C 15 214 262441 1820.36 612 614 143.8
D 13 171 501237 3294.27 621 603 152.0
D 13 174 120751 790.6 621 603 152.0
D 2 249 109765 718.31 621 603 152.0

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