ASTROSAT CZTI

Data Quality Report

Orbit 30996

Creation date: 2024-06-27T20:22:05.309077
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/AS1A10_071T48_9000004478_30996cztM0_level2.evt modeM0/AS1A10_071T48_9000004478_30996cztM0_level2_quad_clean.evt
Size (bytes)648,201,60080,907,840
Size618.2 MB 77.2 MB
Events in quadrant A4,021,370484,575
Events in quadrant B6,375,070480,012
Events in quadrant C4,217,944465,753
Events in quadrant D4,470,290459,330

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170392
B0248802
C0174672
D0184852

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80554275.301055%
B80565837.236842%
C80564365.412115%
D80563274.059086%

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 8280 8055 0 0 0.00% 0.00%
B 8280 8055 11 11 0.13% 0.14%
C 8281 8056 4 4 0.05% 0.05%
D 8281 8056 28 28 0.34% 0.35%

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 11 47 16584 73.4 1038 1015 212.1
A 13 254 14751 64.76 1038 1015 212.1
A 3 137 11280 48.4 1038 1015 212.1
B 6 159 2217970 11022.5 1014 987 201.1
B 0 190 46523 226.4 1014 987 201.1
B 4 80 30674 147.6 1014 987 201.1
C 14 238 154882 651.93 989 995 236.0
C 0 10 141657 595.9 989 995 236.0
C 10 22 23468 95.21 989 995 236.0
D 8 195 238039 977.74 1005 977 242.5
D 2 250 189305 776.74 1005 977 242.5
D 1 239 168317 690.18 1005 977 242.5

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