ASTROSAT CZTI

Data Quality Report

Orbit 01040

Creation date: 2024-06-27T14:06:33.838179
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/AS1P01_998T02_9000000190_01040cztM0_level2.evt modeM0/AS1P01_998T02_9000000190_01040cztM0_level2_quad_clean.evt
Size (bytes)919,198,080104,832,000
Size876.6 MB 100.0 MB
Events in quadrant A6,969,878703,625
Events in quadrant B7,303,608707,221
Events in quadrant C6,931,939676,479
Events in quadrant D6,240,585675,547

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0248941
B0259064
C0248121
D0227941

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5905380.643522%
B5904540.914634%
C5904641.084011%
D5905230.389500%

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 7045 5906 177 177 2.51% 3.00%
B 7044 5905 238 238 3.38% 4.03%
C 7044 5905 193 193 2.74% 3.27%
D 7045 5906 124 124 1.76% 2.10%

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 11 79 7154 12.4 1815 1827 429.5
A 3 111 5574 8.72 1815 1827 429.5
A 13 9 4977 7.33 1815 1827 429.5
B 5 249 59759 131.57 1864 1874 439.9
B 15 22 35737 76.97 1864 1874 439.9
B 4 232 26318 55.56 1864 1874 439.9
C 15 241 290587 625.91 1669 1727 461.5
C 5 234 35869 73.98 1669 1727 461.5
C 8 208 32327 66.3 1669 1727 461.5
D 1 83 73276 141.63 1646 1703 505.4
D 9 64 7322 11.12 1646 1703 505.4
D 10 125 6479 9.45 1646 1703 505.4

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