ASTROSAT CZTI

Data Quality Report

Orbit 37170

Creation date: 2024-06-27T21:36:27.685142
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_079T01_9000005284_37170cztM0_level2.evt modeM0/AS1A11_079T01_9000005284_37170cztM0_level2_quad_clean.evt
Size (bytes)549,495,36051,877,440
Size524.0 MB 49.5 MB
Events in quadrant A2,658,990314,367
Events in quadrant B7,347,021285,090
Events in quadrant C2,766,143310,861
Events in quadrant D3,515,795294,280

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
A0110083
B0253202
C0111312
D0138432

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5220110.210728%
B5220149028.544061%
C5220140.268199%
D52202604.980843%

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 6982 5221 4 4 0.06% 0.08%
B 6982 5221 1197 1197 17.14% 22.93%
C 6982 5221 11 11 0.16% 0.21%
D 6982 5221 231 231 3.31% 4.42%

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 10 83 251745 2005.4 618 606 125.2
A 13 6 8670 64.39 618 606 125.2
A 13 254 7902 58.26 618 606 125.2
B 4 251 4692599 42651.16 574 560 110.0
B 5 172 171005 1549.36 574 560 110.0
B 5 184 85680 773.75 574 560 110.0
C 15 214 225495 1610.5 597 603 139.6
C 0 10 92259 656.37 597 603 139.6
C 10 49 49383 349.33 597 603 139.6
D 12 6 611595 4307.13 580 564 141.9
D 2 249 226227 1590.69 580 564 141.9
D 2 153 210152 1477.38 580 564 141.9

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