ASTROSAT CZTI

Data Quality Report

Orbit 17736

Creation date: 2024-06-27T17:40:12.394023
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/AS1T03_042T01_9000002630_17736cztM0_level2.evt modeM0/AS1T03_042T01_9000002630_17736cztM0_level2_quad_clean.evt
Size (bytes)279,653,76041,437,440
Size266.7 MB 39.5 MB
Events in quadrant A2,255,305242,682
Events in quadrant B1,931,334249,323
Events in quadrant C1,857,762237,441
Events in quadrant D2,141,624232,628

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A095480
B085250
C083010
D091770

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0840
B0840
C0840
D0840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A41421072.583293%
B4142120.289715%
C414280.193143%
D4142270.651859%

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 4142 4142 100 100 2.41% 2.41%
B 4142 4142 4 4 0.10% 0.10%
C 4142 4142 0 0 0.00% 0.00%
D 4142 4142 20 20 0.48% 0.48%

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 15 174 462201 4853.68 463 453 95.1
A 14 237 11236 113.34 463 453 95.1
A 0 226 4039 37.69 463 453 95.1
B 7 220 46971 513.51 467 455 90.6
B 0 219 19511 210.37 467 455 90.6
B 0 230 11398 120.8 467 455 90.6
C 14 238 70157 656.41 450 453 106.2
C 5 218 10058 90.45 450 453 106.2
C 3 233 9997 89.88 450 453 106.2
D 1 52 290773 2541.2 454 441 114.2
D 6 112 26386 227.09 454 441 114.2
D 2 165 24108 207.15 454 441 114.2

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