ASTROSAT CZTI

Data Quality Report

Orbit 41753

Creation date: 2024-06-27T22:32:26.719175
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_077T11_9000005696_41753cztM0_level2.fits modeM0/AS1A12_077T11_9000005696_41753cztM0_level2_quad_clean.evt
Size (bytes)397,733,76085,345,920
Size379.3 MB 81.4 MB
Events in quadrant A2,778,279580,750
Events in quadrant B2,587,936592,254
Events in quadrant C3,160,579537,315
Events in quadrant D5,790,614508,437

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011541137
B011450136
C012747188
D021282374

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01071
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5221130.248994%
B5225320.612440%
C52172604.983707%
D51902584.971098%

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 7100 5279 4 4 0.06% 0.08%
B 7098 5274 28 28 0.39% 0.53%
C 7098 5267 250 250 3.52% 4.75%
D 7098 5270 288 288 4.06% 5.46%

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 534543 4485.31 573 562 119.1
A 13 6 11644 93.09 573 562 119.1
A 13 254 9419 74.4 573 562 119.1
B 5 255 110327 986.9 566 550 111.2
B 4 141 103751 927.78 566 550 111.2
B 0 186 63558 566.44 566 550 111.2
C 0 10 849781 6734.72 535 539 126.1
C 15 214 221084 1748.98 535 539 126.1
C 13 61 3606 24.32 535 539 126.1
D 12 79 3028373 22485.06 545 531 134.7
D 13 249 330862 2453.07 545 531 134.7
D 2 249 230161 1705.26 545 531 134.7

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