ASTROSAT CZTI

Data Quality Report

Orbit 52472

Creation date: 2025-06-26T23:37:02.650551
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_037T01_9000006476_52472cztM0_level2.fits modeM0/AS1A13_037T01_9000006476_52472cztM0_level2_quad_clean.evt
Size (bytes)1,021,092,48086,279,040
Size973.8 MB 82.3 MB
Events in quadrant A4,057,352695,117
Events in quadrant B4,486,717751,942
Events in quadrant C10,364,413544,932
Events in quadrant D18,312,15897,676

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171540
B0182740
C0360120
D0594790

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7444821.101558%
B74441291.732939%
C7444233331.340677%
D74447444100.000000%

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 7444 7444 44 44 0.59% 0.59%
B 7444 7444 30 30 0.40% 0.40%
C 7444 7444 1974 1974 26.52% 26.52%
D 7443 7443 6691 6691 89.90% 89.90%

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 8 249 257991 1303.4 801 778 197.3
A 4 61 230201 1162.57 801 778 197.3
A 3 14 220915 1115.52 801 778 197.3
B 4 171 382866 2238.6 792 763 170.7
B 4 170 336591 1967.49 792 763 170.7
B 4 81 246916 1442.12 792 763 170.7
C 15 248 4518270 25191.9 656 650 179.3
C 15 224 1375657 7667.54 656 650 179.3
C 4 5 1182599 6590.98 656 650 179.3
D 15 93 17066927 417235.89 137 129 40.9
D 6 42 396279 9684.77 137 129 40.9
D 2 153 103378 2524.15 137 129 40.9

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