ASTROSAT CZTI

Data Quality Report

Orbit 36971

Creation date: 2024-06-27T21:33:44.177739
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/AS1C07_001T10_9000005252_36971cztM0_level2.evt modeM0/AS1C07_001T10_9000005252_36971cztM0_level2_quad_clean.evt
Size (bytes)471,237,12083,989,440
Size449.4 MB 80.1 MB
Events in quadrant A2,485,924570,535
Events in quadrant B4,862,248515,771
Events in quadrant C2,882,747576,581
Events in quadrant D3,712,698541,067

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0104813
B0177452
C0115122
D0142852

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4829160.331332%
B482973715.261959%
C48291002.070822%
D48293126.460965%

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 6952 4830 12 12 0.17% 0.25%
B 6952 4830 610 610 8.77% 12.63%
C 6952 4830 82 82 1.18% 1.70%
D 6952 4830 260 260 3.74% 5.38%

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 243834 2186.48 555 545 111.3
A 13 248 41379 366.98 555 545 111.3
A 13 6 24571 215.93 555 545 111.3
B 5 184 2153958 22230.23 521 509 96.9
B 0 221 121317 1247.11 521 509 96.9
B 5 32 103603 1064.25 521 509 96.9
C 0 10 296398 2305.52 556 561 128.3
C 15 214 206644 1606.05 556 561 128.3
C 14 254 96175 745.14 556 561 128.3
D 13 171 462981 3220.88 535 523 143.6
D 12 17 338846 2356.32 535 523 143.6
D 2 250 315019 2190.37 535 523 143.6

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