ASTROSAT CZTI

Data Quality Report

Orbit 52584

Creation date: 2025-06-18T05:34:57.001569
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/AS1C09_011T06_9000006478_52584cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52584cztM0_level2_quad_clean.evt
Size (bytes)647,807,04088,712,640
Size617.8 MB 84.6 MB
Events in quadrant A3,457,596628,234
Events in quadrant B5,452,354629,906
Events in quadrant C5,283,123561,628
Events in quadrant D9,291,046419,632

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150342
B0206462
C0202152
D0321012

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63991001.562744%
B63995518.610720%
C63995989.345210%
D6399197530.864198%

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 7594 6400 87 87 1.15% 1.36%
B 7594 6400 400 400 5.27% 6.25%
C 7594 6400 549 549 7.23% 8.58%
D 7594 6399 1786 1786 23.52% 27.91%

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 5 243 281841 1655.9 673 654 169.8
A 4 249 189220 1110.46 673 654 169.8
A 3 14 115563 676.7 673 654 169.8
B 10 254 1134805 8387.49 646 625 135.2
B 1 238 549934 4062.25 646 625 135.2
B 4 171 440960 3256.36 646 625 135.2
C 15 248 1783187 10059.79 640 635 177.2
C 15 224 388842 2190.84 640 635 177.2
C 15 178 188004 1057.41 640 635 177.2
D 8 176 3337551 20836.66 550 523 160.2
D 15 125 1674403 10451.83 550 523 160.2
D 6 42 979296 6111.53 550 523 160.2

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