ASTROSAT CZTI

Data Quality Report

Orbit 32752

Creation date: 2024-06-27T20:41:36.667870
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_057T04_9000004728_32752cztM0_level2.evt modeM0/AS1A10_057T04_9000004728_32752cztM0_level2_quad_clean.evt
Size (bytes)422,519,04087,157,440
Size402.9 MB 83.1 MB
Events in quadrant A2,548,580572,079
Events in quadrant B3,339,039568,609
Events in quadrant C2,652,778576,432
Events in quadrant D3,883,260538,787

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111803
B0136692
C0115612
D0152562

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A547870.127784%
B54781192.172326%
C5478540.985761%
D54782143.906535%

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 7091 5479 1 1 0.01% 0.02%
B 7091 5479 84 84 1.18% 1.53%
C 7091 5479 32 32 0.45% 0.58%
D 7091 5479 169 169 2.38% 3.08%

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 15 249 64272 495.16 636 623 128.5
A 13 254 10021 73.11 636 623 128.5
A 13 6 9423 68.46 636 623 128.5
B 12 1 221495 1817.48 635 621 121.5
B 4 251 204569 1678.2 635 621 121.5
B 3 26 191806 1573.18 635 621 121.5
C 0 10 143621 989.78 620 625 144.5
C 8 229 38239 260.35 620 625 144.5
C 15 159 13333 87.96 620 625 144.5
D 7 80 457220 2924.19 605 591 156.2
D 2 250 418215 2674.41 605 591 156.2
D 12 6 243728 1557.02 605 591 156.2

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