ASTROSAT CZTI

Data Quality Report

Orbit 52963

Creation date: 2025-07-17T10:30:45.564334
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/AS1A13_003T01_9000006486_52963cztM0_level2.fits modeM0/AS1A13_003T01_9000006486_52963cztM0_level2_quad_clean.evt
Size (bytes)834,713,28072,452,160
Size796.0 MB 69.1 MB
Events in quadrant A10,785,800240,272
Events in quadrant B4,330,154628,255
Events in quadrant C5,195,812531,007
Events in quadrant D10,113,823367,323

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0361791
B0170333
C0196801
D0343121

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6113377661.769998%
B61122784.548429%
C61124938.066099%
D6113214535.089154%

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 7202 6112 3548 3548 49.26% 58.05%
B 7202 6112 123 123 1.71% 2.01%
C 7201 6112 421 421 5.85% 6.89%
D 7202 6112 2060 2060 28.60% 33.70%

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 9 191 8697098 78849.4 444 432 110.3
A 4 249 79646 718.2 444 432 110.3
A 0 8 77585 699.52 444 432 110.3
B 10 254 792405 5608.87 655 633 141.2
B 10 63 274500 1940.06 655 633 141.2
B 1 255 249776 1764.91 655 633 141.2
C 12 254 616969 3632.73 625 621 169.7
C 4 5 553324 3257.61 625 621 169.7
C 2 12 392424 2309.27 625 621 169.7
D 8 176 4081580 26371.11 547 524 154.8
D 15 78 1485686 9596.87 547 524 154.8
D 2 62 910950 5883.02 547 524 154.8

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