ASTROSAT CZTI

Data Quality Report

Orbit 07861

Creation date: 2024-06-27T15:24:55.606317
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/AS1G06_077T02_9000001076_07861cztM0_level2.evt modeM0/AS1G06_077T02_9000001076_07861cztM0_level2_quad_clean.evt
Size (bytes)298,609,92049,150,080
Size284.8 MB 46.9 MB
Events in quadrant A2,078,992290,063
Events in quadrant B2,267,358301,092
Events in quadrant C2,205,025299,099
Events in quadrant D2,186,112282,357

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A091501
B096290
C094420
D095180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0900
B0900
C0900
D0900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A448040.089286%
B4480491.093750%
C448020.044643%
D4480240.535714%

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 4480 4480 0 0 0.00% 0.00%
B 4480 4480 31 31 0.69% 0.69%
C 4480 4480 0 0 0.00% 0.00%
D 4480 4480 15 15 0.33% 0.33%

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 15 234 66339 617.37 521 510 106.6
A 0 226 4854 40.74 521 510 106.6
A 12 194 4591 38.27 521 510 106.6
B 4 239 133316 1339.13 522 512 99.2
B 4 173 48965 488.58 522 512 99.2
B 0 219 19485 191.31 522 512 99.2
C 1 16 199386 1663.21 512 516 119.6
C 8 229 4794 35.78 512 516 119.6
C 13 61 3890 28.22 512 516 119.6
D 1 52 84860 676.42 511 496 124.7
D 2 136 62590 497.86 511 496 124.7
D 2 152 42674 338.18 511 496 124.7

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