ASTROSAT CZTI

Data Quality Report

Orbit 13195

Creation date: 2024-06-27T16:37:49.123034
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/AS1A04_176T04_9000001964_13195cztM0_level2.evt modeM0/AS1A04_176T04_9000001964_13195cztM0_level2_quad_clean.evt
Size (bytes)538,784,64086,463,360
Size513.8 MB 82.5 MB
Events in quadrant A3,290,418542,797
Events in quadrant B4,623,849526,161
Events in quadrant C3,215,248546,516
Events in quadrant D4,716,221518,783

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144413
B0183382
C0142682
D0189142

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69471091.569023%
B69476359.140636%
C6947991.425076%
D69474085.873039%

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 8728 6949 0 0 0.00% 0.00%
B 8728 6949 332 332 3.80% 4.78%
C 8728 6949 1 1 0.01% 0.01%
D 8728 6949 202 202 2.31% 2.91%

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 8 15 30208 170.57 840 820 172.3
A 4 2 12388 67.14 840 820 172.3
A 1 162 8243 43.08 840 820 172.3
B 4 239 1108534 7202.91 808 790 153.8
B 3 64 265132 1718.84 808 790 153.8
B 0 197 34321 218.03 808 790 153.8
C 15 208 17338 87.43 819 824 188.9
C 13 61 5915 26.95 819 824 188.9
C 8 222 4050 17.08 819 824 188.9
D 13 122 1308085 6784.05 804 779 192.7
D 1 52 212815 1100.33 804 779 192.7
D 2 69 37814 192.19 804 779 192.7

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