ASTROSAT CZTI

Data Quality Report

Orbit 11215

Creation date: 2024-06-27T16:09:51.472146
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/AS1G08_075T01_9000001636_11215cztM0_level2.evt modeM0/AS1G08_075T01_9000001636_11215cztM0_level2_quad_clean.evt
Size (bytes)377,328,96081,751,680
Size359.8 MB 78.0 MB
Events in quadrant A3,541,007533,616
Events in quadrant B2,392,033562,880
Events in quadrant C2,073,571558,953
Events in quadrant D3,126,308515,543

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150151527
B0109071060
C0100021026
D0136721240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0141
C0141
D0141

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010010
B09911
C010010
D010010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A43153097.161066%
B4333400.923148%
C4340120.276498%
D43231272.937775%

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 7485 4359 113 113 1.51% 2.59%
B 7485 4375 8 8 0.11% 0.18%
C 7485 4384 1 1 0.01% 0.02%
D 7485 4358 87 87 1.16% 2.00%

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 14 238 553750 5305.65 519 508 104.3
A 8 5 434073 4157.94 519 508 104.3
A 8 15 298284 2855.71 519 508 104.3
B 4 239 136903 1341.56 536 524 101.7
B 15 204 107325 1050.6 536 524 101.7
B 10 244 16260 154.79 536 524 101.7
C 4 254 13436 104.4 527 531 123.6
C 13 61 3865 26.97 527 531 123.6
C 1 3 2886 19.05 527 531 123.6
D 1 52 461923 3768.8 514 500 122.4
D 5 222 232928 1898.42 514 500 122.4
D 13 104 152190 1238.97 514 500 122.4

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