ASTROSAT CZTI

Data Quality Report

Orbit 37090

Creation date: 2024-06-27T21:35:27.307633
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/AS1A09_138T04_9000005282_37090cztM0_level2.evt modeM0/AS1A09_138T04_9000005282_37090cztM0_level2_quad_clean.evt
Size (bytes)466,274,88077,106,240
Size444.7 MB 73.5 MB
Events in quadrant A3,069,941501,785
Events in quadrant B3,963,538490,212
Events in quadrant C3,191,281483,511
Events in quadrant D3,517,195468,598

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126013
B0153542
C0127152
D0141162

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5576430.771162%
B55764357.801291%
C55761302.331420%
D55761733.102582%

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 7129 5577 29 29 0.41% 0.52%
B 7129 5577 312 312 4.38% 5.59%
C 7129 5577 131 131 1.84% 2.35%
D 7129 5577 165 165 2.31% 2.96%

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 267415 2047.78 650 636 130.3
A 7 3 134031 1023.93 650 636 130.3
A 9 143 58314 442.73 650 636 130.3
B 5 184 828760 6784.63 626 609 122.1
B 5 172 534245 4371.81 626 609 122.1
B 0 182 35736 287.78 626 609 122.1
C 1 23 332758 2270.52 625 629 146.3
C 15 214 237750 1621.02 625 629 146.3
C 0 10 155642 1059.71 625 629 146.3
D 2 250 274098 1814.61 624 608 150.7
D 12 17 206879 1368.61 624 608 150.7
D 2 153 148668 982.38 624 608 150.7

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