ASTROSAT CZTI

Data Quality Report

Orbit 41609

Creation date: 2024-06-27T22:30:41.493316
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/AS1A12_035T02_9000005680_41609cztM0_level2.fits modeM0/AS1A12_035T02_9000005680_41609cztM0_level2_quad_clean.evt
Size (bytes)438,526,08098,965,440
Size418.2 MB 94.4 MB
Events in quadrant A3,212,439676,459
Events in quadrant B3,081,464690,843
Events in quadrant C3,393,327643,822
Events in quadrant D6,072,757560,053

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132132
B0134552
C0136482
D0221952

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6081100.164447%
B6082290.476817%
C60821652.712923%
D608271711.788885%

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 9366 6083 2 2 0.02% 0.03%
B 9367 6084 2 2 0.02% 0.03%
C 9367 6084 156 156 1.67% 2.56%
D 9367 6084 697 697 7.44% 11.46%

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 569733 4052.96 677 662 140.4
A 2 79 12927 87.35 677 662 140.4
A 13 254 10400 69.35 677 662 140.4
B 0 186 328017 2518.75 670 651 130.0
B 0 245 44472 337.16 670 651 130.0
B 15 35 25945 194.61 670 651 130.0
C 0 10 485228 3172.17 653 657 152.8
C 15 214 264476 1727.05 653 657 152.8
C 0 15 82981 538.92 653 657 152.8
D 12 79 2135609 13768.9 636 620 155.1
D 13 249 994681 6410.86 636 620 155.1
D 2 249 341827 2200.5 636 620 155.1

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