ASTROSAT CZTI

Data Quality Report

Orbit 00184

Creation date: 2024-06-27T13:57:41.305264
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/AS1P01_136T01_9000000014_00184cztM0_level2.evt modeM0/AS1P01_136T01_9000000014_00184cztM0_level2_quad_clean.evt
Size (bytes)1,069,706,88054,000,000
Size1020.2 MB 51.5 MB
Events in quadrant A7,412,672309,826
Events in quadrant B7,342,330320,911
Events in quadrant C6,879,002312,531
Events in quadrant D10,372,262279,437

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0261863
B0260002
C0246542
D0352092

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A589160.101850%
B589160.101850%
C5891180.305551%
D5891136123.103039%

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 7482 5893 230 230 3.07% 3.90%
B 7482 5893 168 168 2.25% 2.85%
C 7482 5893 107 107 1.43% 1.82%
D 7482 5893 1877 1877 25.09% 31.85%

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 5 244 30394 68.67 1889 1869 415.4
A 14 233 14524 30.47 1889 1869 415.4
A 0 253 14220 29.73 1889 1869 415.4
B 5 85 60099 131.7 1886 1897 441.9
B 8 5 21020 43.27 1886 1897 441.9
B 0 217 12874 24.84 1886 1897 441.9
C 9 128 47243 94.63 1723 1786 480.4
C 0 202 14204 25.85 1723 1786 480.4
C 0 188 12497 22.3 1723 1786 480.4
D 12 249 4151649 8898.58 1542 1591 466.4
D 4 114 88396 186.13 1542 1591 466.4
D 13 6 39947 82.24 1542 1591 466.4

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