ASTROSAT CZTI

Data Quality Report

Orbit 04235

Creation date: 2024-06-27T14:39:09.526009
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_240T01_9000000536_04235cztM0_level2.evt modeM0/AS1G05_240T01_9000000536_04235cztM0_level2_quad_clean.evt
Size (bytes)438,647,04064,454,400
Size418.3 MB 61.5 MB
Events in quadrant A2,879,376392,858
Events in quadrant B2,918,501393,651
Events in quadrant C2,807,706388,770
Events in quadrant D4,261,811347,921

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01303965
B0127498
C0125756
D01726142

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6121991.617383%
B6130480.783034%
C6131470.766596%
D61274988.127958%

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 6978 6133 24 24 0.34% 0.39%
B 6978 6133 2 2 0.03% 0.03%
C 6978 6133 0 0 0.00% 0.00%
D 6978 6129 451 451 6.46% 7.36%

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 181950 1246.77 696 678 145.4
A 15 234 12558 81.71 696 678 145.4
A 0 226 7161 44.59 696 678 145.4
B 15 204 91687 661.6 704 687 137.5
B 3 0 42532 304.23 704 687 137.5
B 14 167 17871 124.93 704 687 137.5
C 9 144 139327 857.81 680 684 161.6
C 10 65 6240 34.38 680 684 161.6
C 13 61 5636 30.64 680 684 161.6
D 2 63 1494441 9633.61 638 620 155.1
D 13 239 147266 945.72 638 620 155.1
D 2 232 87939 563.12 638 620 155.1

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