ASTROSAT CZTI

Data Quality Report

Orbit 12365

Creation date: 2024-06-27T16:26:09.914695
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/AS1A04_130T04_9000001832_12365cztM0_level2.evt modeM0/AS1A04_130T04_9000001832_12365cztM0_level2_quad_clean.evt
Size (bytes)272,016,00032,552,640
Size259.4 MB 31.0 MB
Events in quadrant A2,098,014184,821
Events in quadrant B1,865,609186,353
Events in quadrant C1,782,875185,942
Events in quadrant D2,246,297173,887

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0720
B0720
C0720
D0720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A086091
B078741
C078211
D091661

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3587631.756342%
B3587681.895735%
C3587461.282409%
D35871494.153889%

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 3587 3587 1 1 0.03% 0.03%
B 3588 3588 12 12 0.33% 0.33%
C 3588 3588 18 18 0.50% 0.50%
D 3588 3588 115 115 3.21% 3.21%

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 13 251 175926 1992.73 422 414 88.1
A 1 162 96535 1091.34 422 414 88.1
A 1 178 54732 616.72 422 414 88.1
B 4 239 83873 1021.69 422 412 81.7
B 10 245 67216 817.79 422 412 81.7
B 10 244 14737 175.36 422 412 81.7
C 15 208 175123 1800.35 411 412 97.0
C 0 207 3502 31.84 411 412 97.0
C 13 61 3041 27.09 411 412 97.0
D 1 52 371167 3676.22 409 397 100.9
D 13 104 100285 990.4 409 397 100.9
D 14 34 88986 878.37 409 397 100.9

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