ASTROSAT CZTI

Data Quality Report

Orbit 38855

Creation date: 2024-06-27T21:57:18.234388
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_9000005408_38855cztM0_level2.fits modeM0/AS1A12_077T06_9000005408_38855cztM0_level2_quad_clean.evt
Size (bytes)407,280,96083,399,040
Size388.4 MB 79.5 MB
Events in quadrant A2,571,674588,714
Events in quadrant B2,958,168603,405
Events in quadrant C2,377,799581,091
Events in quadrant D6,776,026398,688

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0390

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107893
B0122962
C0103012
D0235932

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A504360.118977%
B5043741.467381%
C504370.138806%
D5043138927.543129%

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 7076 5044 4 4 0.06% 0.08%
B 7076 5044 33 33 0.47% 0.65%
C 7076 5044 0 0 0.00% 0.00%
D 7076 5044 1293 1293 18.27% 25.63%

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 393661 3471.48 558 547 113.2
A 13 248 17115 146.31 558 547 113.2
A 13 254 8254 68.06 558 547 113.2
B 5 184 389869 3602.13 556 542 108.1
B 4 171 315195 2911.23 556 542 108.1
B 15 85 21232 191.43 556 542 108.1
C 15 214 211449 1645.25 546 550 128.2
C 14 254 26313 200.98 546 550 128.2
C 0 10 9429 69.27 546 550 128.2
D 12 227 2374936 20817.06 459 445 114.1
D 2 250 1293368 11335.0 459 445 114.1
D 2 249 864128 7571.87 459 445 114.1

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