ASTROSAT CZTI

Data Quality Report

Orbit 36843

Creation date: 2024-06-27T21:32:17.005337
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/AS1A11_075T01_9000005244_36843cztM0_level2.evt modeM0/AS1A11_075T01_9000005244_36843cztM0_level2_quad_clean.evt
Size (bytes)541,192,32059,086,080
Size516.1 MB 56.3 MB
Events in quadrant A2,381,448364,816
Events in quadrant B8,513,749331,870
Events in quadrant C2,481,132377,856
Events in quadrant D2,668,459357,541

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01084
B01086
C01088
D01084

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011017577
B0299121183
C011189571
D012372651

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A509460.117786%
B5076234546.197794%
C5102100.196002%
D5089340.668108%

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 7234 5146 1 1 0.01% 0.02%
B 7234 5111 2148 2148 29.69% 42.03%
C 7234 5157 6 6 0.08% 0.12%
D 7234 5145 27 27 0.37% 0.52%

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 10 83 174961 1530.03 559 548 114.0
A 9 143 30224 260.33 559 548 114.0
A 13 6 13035 109.54 559 548 114.0
B 12 1 5780979 64172.02 473 461 90.1
B 5 172 266563 2954.11 473 461 90.1
B 5 255 184571 2043.88 473 461 90.1
C 15 214 219524 1738.47 544 547 126.0
C 0 10 82781 652.86 544 547 126.0
C 14 254 40470 316.95 544 547 126.0
D 12 235 119772 904.89 541 526 131.8
D 2 250 107361 810.71 541 526 131.8
D 12 233 87233 657.97 541 526 131.8

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