ASTROSAT CZTI

Data Quality Report

Orbit 36665

Creation date: 2024-06-27T21:29:57.266203
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_049T05_9000005232_36665cztM0_level2.evt modeM0/AS1A11_049T05_9000005232_36665cztM0_level2_quad_clean.evt
Size (bytes)471,168,00053,449,920
Size449.3 MB 51.0 MB
Events in quadrant A2,856,091323,581
Events in quadrant B2,878,071327,751
Events in quadrant C3,335,128317,878
Events in quadrant D4,843,076280,178

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114413
B0115442
C0128752
D0178172

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5259140.266210%
B5259370.703556%
C52591462.776193%
D525955010.458262%

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 7231 5260 2 2 0.03% 0.04%
B 7231 5260 16 16 0.22% 0.30%
C 7231 5260 109 109 1.51% 2.07%
D 7231 5260 480 480 6.64% 9.13%

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 202820 1491.52 676 665 135.5
A 9 143 27803 200.23 676 665 135.5
A 13 254 9278 63.55 676 665 135.5
B 5 255 95929 760.72 673 656 125.2
B 0 189 48037 378.32 673 656 125.2
B 0 221 22389 173.53 673 656 125.2
C 0 10 484145 3266.65 648 654 148.0
C 15 214 239499 1613.73 648 654 148.0
C 14 254 74248 497.23 648 654 148.0
D 12 235 1063830 7020.88 626 609 151.4
D 2 250 372258 2454.15 626 609 151.4
D 13 249 267245 1760.71 626 609 151.4

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