ASTROSAT CZTI

Data Quality Report

Orbit 51015

Creation date: 2025-03-04T13:35:41.169343
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/AS1C07_001T02_9000006452_51015cztM0_level2.fits modeM0/AS1C07_001T02_9000006452_51015cztM0_level2_quad_clean.evt
Size (bytes)877,890,240157,582,080
Size837.2 MB 150.3 MB
Events in quadrant A9,663,4781,003,698
Events in quadrant B6,581,4501,144,512
Events in quadrant C8,464,575920,211
Events in quadrant D6,924,507931,343

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02280
B02280
C02280
D02280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0364752
B0275232
C0330284
D0286022

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A111448697.797918%
B111453002.691790%
C11144114710.292534%
D111443823.427854%

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 13365 11146 712 712 5.33% 6.39%
B 13366 11147 121 121 0.91% 1.09%
C 13366 11147 794 794 5.94% 7.12%
D 13365 11146 249 249 1.86% 2.23%

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 12 80 2020850 7085.9 1148 1122 285.0
A 14 254 1269072 4448.41 1148 1122 285.0
A 12 3 582328 2039.07 1148 1122 285.0
B 4 81 549672 2257.29 1152 1114 243.0
B 4 171 471080 1933.88 1152 1114 243.0
B 0 172 165794 677.65 1152 1114 243.0
C 0 177 1751392 5867.59 1070 1061 298.3
C 15 229 440756 1473.98 1070 1061 298.3
C 4 5 350561 1171.62 1070 1061 298.3
D 8 176 957821 3113.46 1106 1064 307.3
D 2 216 344504 1117.61 1106 1064 307.3
D 15 108 254421 824.47 1106 1064 307.3

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