ASTROSAT CZTI

Data Quality Report

Orbit 33730

Creation date: 2024-06-27T20:51:54.524262
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/AS1A11_086T01_9000004816_33730cztM0_level2.evt modeM0/AS1A11_086T01_9000004816_33730cztM0_level2_quad_clean.evt
Size (bytes)450,483,84083,295,360
Size429.6 MB 79.4 MB
Events in quadrant A2,434,856553,879
Events in quadrant B3,630,094547,324
Events in quadrant C2,891,001555,994
Events in quadrant D4,341,857508,771

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105832
B0140581
C0116771
D0164831

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5090170.333988%
B50903316.502947%
C50901032.023576%
D50902905.697446%

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 7003 5091 13 13 0.19% 0.26%
B 7003 5091 279 279 3.98% 5.48%
C 7003 5091 89 89 1.27% 1.75%
D 7003 5090 280 280 4.00% 5.50%

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 14 4 77925 651.22 594 582 118.8
A 15 169 53214 443.15 594 582 118.8
A 13 254 8860 69.7 594 582 118.8
B 5 172 1080191 9654.69 582 568 111.8
B 0 245 82500 732.69 582 568 111.8
B 4 251 52803 467.12 582 568 111.8
C 15 214 237410 1773.34 579 586 133.5
C 0 10 192940 1440.35 579 586 133.5
C 0 239 177453 1324.38 579 586 133.5
D 8 195 978193 7053.97 563 547 138.6
D 12 16 415397 2993.25 563 547 138.6
D 2 250 203312 1463.0 563 547 138.6

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