ASTROSAT CZTI

Data Quality Report

Orbit 04191

Creation date: 2024-06-27T14:38:35.029665
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/AS1G05_240T01_9000000536_04191cztM0_level2.evt modeM0/AS1G05_240T01_9000000536_04191cztM0_level2_quad_clean.evt
Size (bytes)1,746,809,280193,072,320
Size1.6 GB 184.1 MB
Events in quadrant A9,975,8591,172,174
Events in quadrant B22,407,7741,077,943
Events in quadrant C8,845,9081,176,088
Events in quadrant D10,411,7641,131,627

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03820
B03820
C03826
D03820

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A042665167
B079919751
C03953570
D044974248

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A187115472.923414%
B18646538128.858736%
C187352351.254337%
D186997584.053693%

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 20493 18769 215 215 1.05% 1.15%
B 20493 18751 4282 4282 20.89% 22.84%
C 20493 18770 23 23 0.11% 0.12%
D 20493 18771 485 485 2.37% 2.58%

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 0 50 1197445 2703.25 2159 2110 442.2
A 3 1 133095 296.22 2159 2110 442.2
A 15 234 123368 274.22 2159 2110 442.2
B 3 0 14786877 39929.1 1928 1878 370.3
B 10 16 48849 126.85 1928 1878 370.3
B 15 204 44204 114.31 1928 1878 370.3
C 9 144 467236 943.39 2121 2133 493.0
C 8 128 20914 38.09 2121 2133 493.0
C 1 16 19879 36.0 2121 2133 493.0
D 13 239 1372513 2726.29 2085 2022 502.7
D 4 95 262846 518.85 2085 2022 502.7
D 10 172 215840 425.34 2085 2022 502.7

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