ASTROSAT CZTI

Data Quality Report

Orbit 40116

Creation date: 2024-06-27T22:12:32.017958
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_004T01_9000005520_40116cztM0_level2.fits modeM0/AS1A12_004T01_9000005520_40116cztM0_level2_quad_clean.evt
Size (bytes)382,927,68088,721,280
Size365.2 MB 84.6 MB
Events in quadrant A2,793,044596,385
Events in quadrant B2,486,853620,505
Events in quadrant C4,930,974554,656
Events in quadrant D3,534,792528,943

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117443
B0113872
C0182172
D0145392

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A551680.145033%
B551670.126904%
C55164898.865120%
D55161843.335751%

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 7309 5517 3 3 0.04% 0.05%
B 7309 5517 2 2 0.03% 0.04%
C 7309 5516 510 510 6.98% 9.25%
D 7309 5517 176 176 2.41% 3.19%

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 472951 3899.64 586 576 121.1
A 2 79 37402 304.01 586 576 121.1
A 9 143 9601 74.5 586 576 121.1
B 4 171 88384 777.45 583 567 113.0
B 0 189 36017 313.84 583 567 113.0
B 5 255 34337 298.97 583 567 113.0
C 9 187 2459115 18845.92 555 556 130.5
C 15 214 226141 1729.21 555 556 130.5
C 0 10 30644 230.64 555 556 130.5
D 12 227 342085 2508.77 561 546 136.1
D 12 0 304476 2232.51 561 546 136.1
D 10 204 277803 2036.58 561 546 136.1

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