ASTROSAT CZTI

Data Quality Report

Orbit 14228

Creation date: 2024-06-27T16:52:11.907135
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/AS1G08_084T01_9000002100_14228cztM0_level2.evt modeM0/AS1G08_084T01_9000002100_14228cztM0_level2_quad_clean.evt
Size (bytes)583,067,52087,384,960
Size556.1 MB 83.3 MB
Events in quadrant A3,183,061583,610
Events in quadrant B3,326,665590,894
Events in quadrant C3,304,719571,587
Events in quadrant D7,431,529474,614

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131222
B0134791
C0134931
D0262001

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6084781.282051%
B6084961.577909%
C6084641.051940%
D6084151324.868508%

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 7380 6086 8 8 0.11% 0.13%
B 7380 6085 9 9 0.12% 0.15%
C 7380 6086 1 1 0.01% 0.02%
D 7380 6086 1293 1293 17.52% 21.25%

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 12 189 36514 225.18 802 787 158.7
A 9 143 26344 161.08 802 787 158.7
A 15 222 15311 91.54 802 787 158.7
B 0 229 76489 516.09 795 776 146.7
B 4 97 49519 332.25 795 776 146.7
B 0 189 49063 329.14 795 776 146.7
C 3 233 269299 1534.04 777 783 175.0
C 14 234 7551 38.67 777 783 175.0
C 13 61 5591 27.47 777 783 175.0
D 12 110 2075387 12481.58 715 697 166.2
D 5 222 1575543 9474.46 715 697 166.2
D 10 172 666908 4008.0 715 697 166.2

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