ASTROSAT CZTI

Data Quality Report

Orbit 31275

Creation date: 2024-06-27T20:25:55.060689
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/AS1A10_058T08_9000004528_31275cztM0_level2.evt modeM0/AS1A10_058T08_9000004528_31275cztM0_level2_quad_clean.evt
Size (bytes)221,918,40053,187,840
Size211.6 MB 50.7 MB
Events in quadrant A1,307,023355,840
Events in quadrant B2,208,574356,544
Events in quadrant C1,475,179343,789
Events in quadrant D1,527,717343,898

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060501
B089621
C063711
D067181

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0600
C0600
D0600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2953250.846597%
B2953581.964104%
C2953772.607518%
D2953240.812733%

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 3733 2954 0 0 0.00% 0.00%
B 3733 2954 1 1 0.03% 0.03%
C 3733 2954 8 8 0.21% 0.27%
D 3733 2954 2 2 0.05% 0.07%

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 5416 72.83 338 331 69.8
A 3 137 3440 44.53 338 331 69.8
A 0 226 2849 36.07 338 331 69.8
B 6 159 835347 12416.16 337 328 67.3
B 4 80 36647 540.04 337 328 67.3
B 0 230 11408 164.75 337 328 67.3
C 0 10 95868 1215.39 326 327 78.6
C 14 238 55102 696.8 326 327 78.6
C 3 233 43201 545.41 326 327 78.6
D 8 195 255154 3251.32 326 319 78.4
D 2 250 20141 252.9 326 319 78.4
D 12 233 11015 136.47 326 319 78.4

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