ASTROSAT CZTI

Data Quality Report

Orbit 18371

Creation date: 2024-06-27T17:48:58.105373
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/AS1A06_006T01_9000002724_18371cztM0_level2.evt modeM0/AS1A06_006T01_9000002724_18371cztM0_level2_quad_clean.evt
Size (bytes)513,002,88085,942,080
Size489.2 MB 82.0 MB
Events in quadrant A3,411,760533,660
Events in quadrant B3,661,070538,617
Events in quadrant C4,042,719523,414
Events in quadrant D3,943,918517,647

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145172
B0150902
C0161972
D0162772

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70241432.035877%
B70251952.775801%
C70252283.245552%
D70251682.391459%

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 7664 7025 1 1 0.01% 0.01%
B 7665 7026 15 15 0.20% 0.21%
C 7665 7026 50 50 0.65% 0.71%
D 7665 7026 55 55 0.72% 0.78%

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 4 2 28498 156.68 876 857 176.4
A 8 34 9259 47.62 876 857 176.4
A 0 226 7750 39.07 876 857 176.4
B 10 245 65981 390.41 874 852 166.8
B 3 64 61639 364.38 874 852 166.8
B 7 220 28968 168.54 874 852 166.8
C 0 207 322035 1633.68 840 846 196.6
C 3 233 314659 1596.16 840 846 196.6
C 14 238 127712 645.29 840 846 196.6
D 1 52 363806 1711.37 856 830 212.1
D 12 110 121126 567.18 856 830 212.1
D 7 96 80901 377.52 856 830 212.1

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