ASTROSAT CZTI

Data Quality Report

Orbit 52947

Creation date: 2025-07-17T08:33:32.095958
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_52947cztM0_level2.fits modeM0/AS1A13_003T01_9000006486_52947cztM0_level2_quad_clean.evt
Size (bytes)873,694,08065,551,680
Size833.2 MB 62.5 MB
Events in quadrant A14,934,65627,126
Events in quadrant B3,030,229632,546
Events in quadrant C9,091,790398,046
Events in quadrant D4,821,782510,061

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0484511
B0131341
C0311911
D0183591

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5974576496.484767%
B59741292.159357%
C5974196732.926013%
D59743235.406763%

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 7139 5974 5507 5507 77.14% 92.18%
B 7139 5975 64 64 0.90% 1.07%
C 7139 5975 1751 1751 24.53% 29.31%
D 7139 5975 291 291 4.08% 4.87%

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 13711183 205363.36 262 255 66.8
A 0 8 46903 698.69 262 255 66.8
A 4 207 32610 484.61 262 255 66.8
B 1 255 129392 928.34 644 621 138.7
B 10 63 99633 713.8 644 621 138.7
B 10 254 78885 564.22 644 621 138.7
C 15 254 3081530 21110.61 532 529 145.9
C 10 171 1632034 11178.86 532 529 145.9
C 13 3 671275 4595.86 532 529 145.9
D 8 176 872423 4924.35 618 590 177.0
D 15 78 488232 2754.34 618 590 177.0
D 11 176 253606 1429.1 618 590 177.0

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