ASTROSAT CZTI

Data Quality Report

Orbit 11255

Creation date: 2024-06-27T16:10:27.682317
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/AS1C03_012T01_9000001642_11255cztM0_level2.evt modeM0/AS1C03_012T01_9000001642_11255cztM0_level2_quad_clean.evt
Size (bytes)704,387,52072,714,240
Size671.8 MB 69.3 MB
Events in quadrant A4,817,895443,005
Events in quadrant B4,651,042457,833
Events in quadrant C3,221,091455,266
Events in quadrant D8,178,956367,558

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0186443
B0181632
C0140572
D0291252

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68524566.654991%
B68524556.640397%
C6852741.079977%
D6852181026.415645%

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 8507 6854 282 282 3.31% 4.11%
B 8507 6854 203 203 2.39% 2.96%
C 8507 6854 0 0 0.00% 0.00%
D 8507 6854 1325 1325 15.58% 19.33%

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 14 238 1223603 7209.69 833 817 169.6
A 8 5 181175 1063.41 833 817 169.6
A 8 15 139396 817.08 833 817 169.6
B 4 239 1029151 6443.59 835 816 159.6
B 11 51 178590 1113.94 835 816 159.6
B 15 204 57309 353.98 835 816 159.6
C 7 238 6729 30.96 824 829 190.5
C 13 61 6087 27.59 824 829 190.5
C 8 222 2635 9.48 824 829 190.5
D 13 152 4566440 25721.85 732 711 177.5
D 8 195 272985 1533.9 732 711 177.5
D 14 34 166959 936.59 732 711 177.5

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