ASTROSAT CZTI

Data Quality Report

Orbit 30754

Creation date: 2024-06-27T20:19:11.166857
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_053T35_9000004438_30754cztM0_level2.evt modeM0/AS1A10_053T35_9000004438_30754cztM0_level2_quad_clean.evt
Size (bytes)723,991,68080,366,400
Size690.5 MB 76.6 MB
Events in quadrant A3,873,472480,508
Events in quadrant B6,590,361476,358
Events in quadrant C4,262,666456,870
Events in quadrant D6,645,337449,560

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167181
B0258111
C0175851
D0255721

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8203540.658296%
B82042693.278888%
C82041792.181863%
D82043013.668942%

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 8638 8203 0 0 0.00% 0.00%
B 8639 8204 115 115 1.33% 1.40%
C 8639 8204 53 53 0.61% 0.65%
D 8639 8204 259 259 3.00% 3.16%

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 13 254 16704 77.53 998 977 202.9
A 0 13 13782 63.13 998 977 202.9
A 3 137 10222 45.58 998 977 202.9
B 6 159 2238061 11725.89 978 952 190.8
B 5 255 424808 2221.66 978 952 190.8
B 0 190 63266 326.62 978 952 190.8
C 10 22 224135 990.56 948 955 225.3
C 14 238 153533 677.2 948 955 225.3
C 3 233 108051 475.33 948 955 225.3
D 8 195 2329605 10144.13 960 935 229.6
D 13 249 382793 1663.45 960 935 229.6
D 12 227 243172 1055.23 960 935 229.6

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