ASTROSAT CZTI

Data Quality Report

Orbit 04854

Creation date: 2024-06-27T14:48:01.722726
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/AS1G05_002T01_9000000616_04854cztM0_level2.evt modeM0/AS1G05_002T01_9000000616_04854cztM0_level2_quad_clean.evt
Size (bytes)539,501,76088,528,320
Size514.5 MB 84.4 MB
Events in quadrant A3,911,154535,113
Events in quadrant B3,837,484532,165
Events in quadrant C3,538,426541,549
Events in quadrant D4,508,934516,154

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174743
B0171592
C0166922
D0192835

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79921752.189690%
B79921962.452452%
C79921221.526527%
D79912403.003379%

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 8557 7995 48 48 0.56% 0.60%
B 8557 7995 34 34 0.40% 0.43%
C 8557 7995 2 2 0.02% 0.03%
D 8557 7995 124 124 1.45% 1.55%

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 0 50 325989 1732.9 909 887 187.6
A 13 251 61431 322.72 909 887 187.6
A 8 6 27214 140.33 909 887 187.6
B 10 16 141493 784.64 920 896 179.2
B 14 167 66496 366.1 920 896 179.2
B 15 204 25316 136.28 920 896 179.2
C 12 4 43818 208.41 885 888 206.0
C 9 247 32378 152.88 885 888 206.0
C 13 61 7393 31.58 885 888 206.0
D 13 235 517157 2368.92 879 850 218.0
D 2 136 236242 1080.03 879 850 218.0
D 2 234 194606 888.99 879 850 218.0

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