ASTROSAT CZTI

Data Quality Report

Orbit 41544

Creation date: 2024-06-27T22:30:15.245826
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_035T02_9000005676_41544cztM0_level2.fits modeM0/AS1A12_035T02_9000005676_41544cztM0_level2_quad_clean.evt
Size (bytes)348,958,08091,869,120
Size332.8 MB 87.6 MB
Events in quadrant A2,989,868628,982
Events in quadrant B3,303,531632,951
Events in quadrant C3,028,307584,051
Events in quadrant D3,170,352553,547

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121852
B0135272
C0124502
D0132942

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5457210.384827%
B54571192.180685%
C54572003.665017%
D54571923.518417%

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 7219 5458 6 6 0.08% 0.11%
B 7219 5458 55 55 0.76% 1.01%
C 7219 5458 199 199 2.76% 3.65%
D 7219 5458 173 173 2.40% 3.17%

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 541863 4369.03 615 602 123.9
A 14 235 44853 357.19 615 602 123.9
A 13 248 10979 83.76 615 602 123.9
B 0 186 662515 5730.25 604 587 115.5
B 0 189 164140 1415.86 604 587 115.5
B 0 245 60759 520.9 604 587 115.5
C 0 10 534178 3967.64 577 581 134.5
C 15 214 233480 1731.76 577 581 134.5
C 14 254 4697 30.61 577 581 134.5
D 13 249 575388 3993.45 589 572 143.9
D 2 249 148538 1027.97 589 572 143.9
D 12 6 60672 417.54 589 572 143.9

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