ASTROSAT CZTI

Data Quality Report

Orbit 06848

Creation date: 2024-06-27T15:12:21.042113
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/AS1A02_075T02_9000000940_06848cztM0_level2.evt modeM0/AS1A02_075T02_9000000940_06848cztM0_level2_quad_clean.evt
Size (bytes)510,814,08089,058,240
Size487.2 MB 84.9 MB
Events in quadrant A4,385,821561,693
Events in quadrant B3,538,673573,536
Events in quadrant C3,349,138566,451
Events in quadrant D3,762,455549,220

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0173742
B0148202
C0140822
D0152852

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63923054.771589%
B63921682.628285%
C63921271.986859%
D63922734.270964%

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 7672 6393 134 134 1.75% 2.10%
B 7672 6393 45 45 0.59% 0.70%
C 7672 6393 59 59 0.77% 0.92%
D 7672 6393 125 125 1.63% 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 8 15 1228203 7687.67 794 779 159.7
A 13 251 66630 412.44 794 779 159.7
A 15 239 15677 93.31 794 779 159.7
B 4 48 200661 1321.33 804 789 151.3
B 0 228 142235 935.08 804 789 151.3
B 0 214 26802 171.97 804 789 151.3
C 9 68 213265 1179.89 789 793 180.1
C 10 22 29313 158.38 789 793 180.1
C 12 4 18999 101.1 789 793 180.1
D 2 33 493557 2584.34 779 755 190.7
D 8 195 124470 648.78 779 755 190.7
D 2 136 71011 368.43 779 755 190.7

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