ASTROSAT CZTI

Data Quality Report

Orbit 54598

Creation date: 2025-10-31T22:46:25.916678
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/AS1A14_066T07_9000006522_54598cztM0_level2.fits modeM0/AS1A14_066T07_9000006522_54598cztM0_level2_quad_clean.evt
Size (bytes)1,067,376,960190,932,480
Size1017.9 MB 182.1 MB
Events in quadrant A8,262,7441,279,886
Events in quadrant B11,220,5411,231,565
Events in quadrant C8,330,2901,201,590
Events in quadrant D10,604,6881,093,932

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0338034
B0434483
C0344393
D0413313

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02860
B02860
C02860
D02860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A141057295.168380%
B14105206114.611840%
C141056714.757178%
D1410610397.365660%

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 15625 14107 345 345 2.21% 2.45%
B 15625 14106 1373 1373 8.79% 9.73%
C 15625 14106 334 334 2.14% 2.37%
D 15626 14108 704 704 4.51% 4.99%

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 11 3 751026 1970.57 1543 1503 380.4
A 13 248 587992 1541.94 1543 1503 380.4
A 3 14 495174 1297.91 1543 1503 380.4
B 1 207 2600901 8366.31 1462 1408 310.7
B 5 172 1809546 5819.38 1462 1408 310.7
B 8 234 188159 601.05 1462 1408 310.7
C 15 254 656656 1604.15 1493 1477 408.4
C 4 5 638742 1560.29 1493 1477 408.4
C 1 16 363694 886.86 1493 1477 408.4
D 3 12 1736335 4142.48 1486 1417 418.8
D 2 62 1150210 2742.98 1486 1417 418.8
D 12 33 467201 1112.16 1486 1417 418.8

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