ASTROSAT CZTI

Data Quality Report

Orbit 16908

Creation date: 2024-06-27T17:29:22.033035
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/AS1A05_004T03_9000002508_16908cztM0_level2.evt modeM0/AS1A05_004T03_9000002508_16908cztM0_level2_quad_clean.evt
Size (bytes)376,001,28017,622,720
Size358.6 MB 16.8 MB
Events in quadrant A3,887,84553,296
Events in quadrant B2,469,99853,367
Events in quadrant C2,283,60652,824
Events in quadrant D2,435,95353,181

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144461
B0101341
C095651
D0102341

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0920
B0920
C0920
D0920

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A455259112.983304%
B45521302.855888%
C45521022.240773%
D45531162.547771%

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 5754 4554 362 362 6.29% 7.95%
B 5754 4554 4 4 0.07% 0.09%
C 5754 4554 0 0 0.00% 0.00%
D 5755 4555 32 32 0.56% 0.70%

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 1672309 14708.07 562 552 113.7
A 12 189 50474 439.21 562 552 113.7
A 0 226 4939 38.6 562 552 113.7
B 15 35 145880 1318.73 576 563 110.2
B 4 216 16092 140.92 576 563 110.2
B 0 219 15784 138.13 576 563 110.2
C 14 238 85748 669.39 547 552 127.3
C 3 233 54387 422.98 547 552 127.3
C 14 225 5565 39.39 547 552 127.3
D 1 52 181196 1315.62 563 547 137.3
D 2 33 54426 392.39 563 547 137.3
D 15 145 25501 181.73 563 547 137.3

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