ASTROSAT CZTI

Data Quality Report

Orbit 39068

Creation date: 2024-06-27T21:59:59.132899
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_077T06_9000005430_39068cztM0_level2.fits modeM0/AS1A12_077T06_9000005430_39068cztM0_level2_quad_clean.evt
Size (bytes)407,851,20090,256,320
Size389.0 MB 86.1 MB
Events in quadrant A3,387,664608,110
Events in quadrant B2,529,572642,542
Events in quadrant C3,792,852586,456
Events in quadrant D4,986,891534,733

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131723
B0106472
C0144802
D0184662

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A51521993.862578%
B515280.155280%
C51522294.444876%
D51523166.133540%

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 7035 5153 116 116 1.65% 2.25%
B 7035 5153 2 2 0.03% 0.04%
C 7035 5153 193 193 2.74% 3.75%
D 7035 5153 295 295 4.19% 5.72%

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 15 222 535229 4449.47 596 585 120.2
A 10 83 399634 3321.0 596 585 120.2
A 15 223 63890 526.84 596 585 120.2
B 0 190 67838 592.96 597 582 113.4
B 0 230 37487 325.37 597 582 113.4
B 0 213 23199 199.4 597 582 113.4
C 15 208 1305154 9660.92 577 581 135.0
C 15 214 216079 1595.85 577 581 135.0
C 3 233 6871 46.58 577 581 135.0
D 12 235 2134701 15071.88 580 563 141.6
D 2 249 361333 2547.86 580 563 141.6
D 1 47 116697 820.17 580 563 141.6

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