ASTROSAT CZTI

Data Quality Report

Orbit 14815

Creation date: 2024-06-27T17:00:02.933089
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/AS1G08_010T02_9000002188_14815cztM0_level2.evt modeM0/AS1G08_010T02_9000002188_14815cztM0_level2_quad_clean.evt
Size (bytes)1,004,290,560154,296,000
Size957.8 MB 147.1 MB
Events in quadrant A6,467,471963,967
Events in quadrant B7,800,835934,885
Events in quadrant C8,854,159913,776
Events in quadrant D6,378,256926,210

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0279324
B0317003
C0345023
D0284353

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02760
B02760
C02760
D02760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13519880.650936%
B135194443.284267%
C135196384.719284%
D13519610.451217%

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 15270 13523 1 1 0.01% 0.01%
B 15270 13523 243 243 1.59% 1.80%
C 15270 13523 382 382 2.50% 2.82%
D 15270 13523 14 14 0.09% 0.10%

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 12 189 205666 621.06 1622 1589 328.6
A 0 226 14285 38.64 1622 1589 328.6
A 4 2 14138 38.19 1622 1589 328.6
B 3 64 709715 2314.85 1596 1558 305.9
B 15 222 358125 1165.56 1596 1558 305.9
B 0 229 159435 516.07 1596 1558 305.9
C 4 254 2040732 5737.74 1524 1530 355.4
C 3 233 825563 2318.6 1524 1530 355.4
C 0 207 33701 90.52 1524 1530 355.4
D 13 104 159017 400.93 1556 1519 392.8
D 1 255 81464 203.51 1556 1519 392.8
D 13 249 75784 189.05 1556 1519 392.8

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