ASTROSAT CZTI

Data Quality Report

Orbit 33946

Creation date: 2024-06-27T20:54:34.251590
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_068T02_9000004850_33946cztM0_level2.evt modeM0/AS1A11_068T02_9000004850_33946cztM0_level2_quad_clean.evt
Size (bytes)484,464,96049,230,720
Size462.0 MB 47.0 MB
Events in quadrant A2,627,895288,545
Events in quadrant B3,283,349289,063
Events in quadrant C4,047,060280,495
Events in quadrant D4,362,267268,583

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107023
B0128722
C0157432
D0165352

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A518640.077131%
B51861482.853837%
C51861713.297339%
D51863025.823371%

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 7309 5187 0 0 0.00% 0.00%
B 7309 5187 92 92 1.26% 1.77%
C 7309 5187 113 113 1.55% 2.18%
D 7309 5187 242 242 3.31% 4.67%

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 6 15633 110.89 673 661 135.0
A 10 83 14820 104.86 673 661 135.0
A 13 254 8251 56.21 673 661 135.0
B 5 172 448729 3620.87 655 641 123.8
B 15 35 100971 810.74 655 641 123.8
B 4 251 42500 338.25 655 641 123.8
C 3 233 999798 6761.34 642 648 147.8
C 0 10 232267 1567.39 642 648 147.8
C 15 214 225210 1519.63 642 648 147.8
D 13 249 520764 3241.05 643 625 160.5
D 8 195 455506 2834.42 643 625 160.5
D 8 230 229668 1427.19 643 625 160.5

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