ASTROSAT CZTI

Data Quality Report

Orbit 54583

Creation date: 2025-10-31T10:10:30.214685
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_127T09_9000006520_54583cztM0_level2.fits modeM0/AS1A14_127T09_9000006520_54583cztM0_level2_quad_clean.evt
Size (bytes)1,403,596,800270,195,840
Size1.3 GB 257.7 MB
Events in quadrant A15,645,4461,746,058
Events in quadrant B9,934,8891,895,401
Events in quadrant C11,185,3661,675,154
Events in quadrant D13,695,2741,530,961

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0596132
B0431682
C0471772
D0540562

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03920
B03920
C03920
D03920

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1934014317.399173%
B193405772.983454%
C193417173.707151%
D1934011876.137539%

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 20410 19342 826 826 4.05% 4.27%
B 20410 19342 134 134 0.66% 0.69%
C 20411 19343 363 363 1.78% 1.88%
D 20410 19342 803 803 3.93% 4.15%

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 3 14 4287907 8200.22 2095 2039 522.7
A 11 3 1006188 1921.26 2095 2039 522.7
A 14 235 904043 1725.82 2095 2039 522.7
B 10 14 464395 1029.51 2089 2015 449.1
B 0 213 287705 636.1 2089 2015 449.1
B 2 249 159041 349.62 2089 2015 449.1
C 4 5 865388 1538.11 2045 2028 561.3
C 15 157 550294 976.76 2045 2028 561.3
C 13 3 423957 751.68 2045 2028 561.3
D 7 70 1187085 2081.42 2017 1926 569.4
D 15 94 1085285 1902.63 2017 1926 569.4
D 3 12 1045228 1832.28 2017 1926 569.4

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