ASTROSAT CZTI

Data Quality Report

Orbit 50522

Creation date: 2025-01-30T09:04:49.317248
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/AS1T05_239T01_9000006444_50522cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50522cztM0_level2_quad_clean.evt
Size (bytes)643,020,48093,055,680
Size613.2 MB 88.7 MB
Events in quadrant A4,422,642648,149
Events in quadrant B3,687,458707,449
Events in quadrant C8,819,912492,359
Events in quadrant D6,364,385512,420

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0173894
B0154792
C0306872
D0235542

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65561362.074436%
B65562083.172666%
C6556179727.410006%
D6556103815.832825%

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 7771 6557 71 71 0.91% 1.08%
B 7771 6557 117 117 1.51% 1.78%
C 7771 6556 1578 1578 20.31% 24.07%
D 7771 6557 990 990 12.74% 15.10%

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 3 45 441590 2453.43 722 705 179.7
A 4 3 222830 1236.08 722 705 179.7
A 4 249 129431 716.33 722 705 179.7
B 7 0 408366 2668.22 719 693 152.8
B 1 255 72474 469.81 719 693 152.8
B 8 128 54072 349.37 719 693 152.8
C 15 235 2626427 14647.88 633 626 179.3
C 12 249 1223971 6824.36 633 626 179.3
C 15 196 934819 5211.34 633 626 179.3
D 2 165 1633094 9083.06 647 622 179.7
D 6 42 1289038 7168.74 647 622 179.7
D 2 249 214203 1188.36 647 622 179.7

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