ASTROSAT CZTI

Data Quality Report

Orbit 43178

Creation date: 2024-06-27T22:48:55.751628
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_9000005856_43178cztM0_level2.fits modeM0/AS1C07_001T10_9000005856_43178cztM0_level2_quad_clean.evt
Size (bytes)1,032,816,960241,007,040
Size985.0 MB 229.8 MB
Events in quadrant A12,657,6011,466,451
Events in quadrant B7,353,9781,685,642
Events in quadrant C8,638,0561,588,529
Events in quadrant D8,371,5761,478,641

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0470
C0470
D0470

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03180
B03180
C03180
D03180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0476785
B0334744
C0361944
D0366534

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15620175311.222791%
B156201400.896287%
C156202641.690141%
D156203872.477593%

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 19766 15623 1622 1622 8.21% 10.38%
B 19766 15623 116 116 0.59% 0.74%
C 19766 15623 267 267 1.35% 1.71%
D 19766 15623 397 397 2.01% 2.54%

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 15 222 4250645 13474.19 1550 1514 315.4
A 10 83 1428467 4524.93 1550 1514 315.4
A 15 237 445543 1408.04 1550 1514 315.4
B 0 229 450436 1417.56 1647 1600 316.6
B 0 186 247021 775.11 1647 1600 316.6
B 0 189 132126 412.24 1647 1600 316.6
C 0 239 1536717 4087.17 1606 1614 375.6
C 15 214 641797 1704.47 1606 1614 375.6
C 4 254 83488 217.99 1606 1614 375.6
D 13 249 1055532 2685.52 1610 1561 392.5
D 1 52 754889 1919.48 1610 1561 392.5
D 12 233 170340 430.05 1610 1561 392.5

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