ASTROSAT CZTI

Data Quality Report

Orbit 42215

Creation date: 2024-06-27T22:38:35.786050
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_088T51_9000005780_42215cztM0_level2.fits modeM0/AS1A12_088T51_9000005780_42215cztM0_level2_quad_clean.evt
Size (bytes)310,389,12084,274,560
Size296.0 MB 80.4 MB
Events in quadrant A3,068,483567,053
Events in quadrant B2,793,215581,332
Events in quadrant C2,342,995554,478
Events in quadrant D2,897,685500,925

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0300
C0300
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122032
B0117535
C0101712
D0120942

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4966861.731776%
B49651412.839879%
C4965120.241692%
D49651182.376636%

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 7088 4966 69 69 0.97% 1.39%
B 7088 4966 100 100 1.41% 2.01%
C 7088 4966 7 7 0.10% 0.14%
D 7088 4966 112 112 1.58% 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 10 83 547772 4852.15 545 534 112.8
A 15 222 218225 1930.18 545 534 112.8
A 15 223 161040 1423.14 545 534 112.8
B 5 255 539775 5039.66 545 531 107.0
B 3 112 73058 677.82 545 531 107.0
B 0 229 29586 271.54 545 531 107.0
C 15 214 207822 1670.3 529 532 124.1
C 15 159 66849 534.37 529 532 124.1
C 13 61 3629 24.96 529 532 124.1
D 1 52 352155 2742.43 522 507 128.2
D 12 6 217833 1694.88 522 507 128.2
D 1 47 105881 821.79 522 507 128.2

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