ASTROSAT CZTI

Data Quality Report

Orbit 31977

Creation date: 2024-06-27T20:35:00.346017
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/AS1C06_010T03_9000004672_31977cztM0_level2.evt modeM0/AS1C06_010T03_9000004672_31977cztM0_level2_quad_clean.evt
Size (bytes)604,140,480135,679,680
Size576.2 MB 129.4 MB
Events in quadrant A3,186,213959,916
Events in quadrant B5,322,162941,002
Events in quadrant C4,028,316885,249
Events in quadrant D5,329,630879,261

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131581
B0203351
C0156331
D0201931

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6365821.288295%
B63652373.723488%
C63654106.441477%
D63663575.607917%

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 7555 6365 0 0 0.00% 0.00%
B 7555 6365 67 67 0.89% 1.05%
C 7555 6365 255 255 3.38% 4.01%
D 7556 6366 298 298 3.94% 4.68%

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 13 254 11545 65.95 823 809 162.8
A 3 137 7495 41.07 823 809 162.8
A 0 226 7137 38.87 823 809 162.8
B 6 159 1642497 11108.84 798 781 147.8
B 10 245 153681 1034.61 798 781 147.8
B 5 172 113767 764.53 798 781 147.8
C 0 10 823111 4725.28 760 764 174.0
C 14 238 129881 741.92 760 764 174.0
C 3 233 69540 395.19 760 764 174.0
D 11 164 673392 3684.76 781 764 182.5
D 13 249 474514 2595.28 781 764 182.5
D 8 195 283434 1548.51 781 764 182.5

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