ASTROSAT CZTI

Data Quality Report

Orbit 01143

Creation date: 2024-06-27T14:08:10.629356
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_997T03_9000000216_01143cztM0_level2.evt modeM0/AS1P01_997T03_9000000216_01143cztM0_level2_quad_clean.evt
Size (bytes)911,551,68092,269,440
Size869.3 MB 88.0 MB
Events in quadrant A7,053,140613,853
Events in quadrant B7,221,008616,539
Events in quadrant C6,867,695581,757
Events in quadrant D6,081,741579,333

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250432
B0255451
C0245121
D0221821

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5761300.520743%
B5761450.781114%
C5761560.972053%
D576180.138865%

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 6971 5761 218 218 3.13% 3.78%
B 6971 5761 288 288 4.13% 5.00%
C 6971 5762 230 230 3.30% 3.99%
D 6971 5762 113 113 1.62% 1.96%

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 15 127 153707 352.22 1797 1808 431.3
A 11 79 6171 10.12 1797 1808 431.3
A 3 111 5890 9.47 1797 1808 431.3
B 5 191 111238 251.1 1841 1850 435.6
B 15 22 39481 86.38 1841 1850 435.6
B 15 85 32375 70.07 1841 1850 435.6
C 15 241 266860 589.35 1630 1680 450.0
C 12 206 157786 346.94 1630 1680 450.0
C 9 52 28383 59.35 1630 1680 450.0
D 13 138 9159 14.91 1623 1681 501.6
D 10 84 6198 9.0 1623 1681 501.6
D 2 63 5134 6.88 1623 1681 501.6

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