ASTROSAT CZTI

Data Quality Report

Orbit 55219

Creation date: 2025-12-13T12:28:56.173427
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_009T01_9000006534_55219cztM0_level2.fits modeM0/AS1A14_009T01_9000006534_55219cztM0_level2_quad_clean.evt
Size (bytes)585,357,120116,807,040
Size558.2 MB 111.4 MB
Events in quadrant A3,998,039763,102
Events in quadrant B3,682,374828,721
Events in quadrant C6,787,642691,795
Events in quadrant D6,550,914671,928

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0182142
B0174003
C02615424
D0253090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8367680.812717%
B8365360.430365%
C83607518.983254%
D83674525.402175%

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 8368 8368 48 48 0.57% 0.57%
B 8367 8366 16 16 0.19% 0.19%
C 8367 8364 620 620 7.41% 7.41%
D 8367 8367 468 468 5.59% 5.59%

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 4 205 277748 1283.56 875 850 215.7
A 3 45 98376 452.08 875 850 215.7
A 0 8 68929 315.58 875 850 215.7
B 2 249 65992 346.16 873 838 188.2
B 0 182 60139 315.06 873 838 188.2
B 10 247 52585 274.93 873 838 188.2
C 12 254 2217484 9644.92 834 825 229.8
C 12 2 418513 1817.41 834 825 229.8
C 13 3 301990 1310.4 834 825 229.8
D 2 249 997966 4251.86 836 798 234.5
D 15 42 783217 3336.19 836 798 234.5
D 11 129 711074 3028.57 836 798 234.5

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