ASTROSAT CZTI

Data Quality Report

Orbit 23831

Creation date: 2024-06-27T18:59:09.423045
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/AS1A07_113T01_9000003526_23831cztM0_level2.evt modeM0/AS1A07_113T01_9000003526_23831cztM0_level2_quad_clean.evt
Size (bytes)354,778,56062,694,720
Size338.3 MB 59.8 MB
Events in quadrant A2,124,193407,659
Events in quadrant B2,206,535414,912
Events in quadrant C2,302,846401,772
Events in quadrant D3,797,437351,123

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A031
B030
C031
D032

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013731
B013850
C013838
D013745

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138984371
B0142804592
C0144044491
D02597811798

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A470760.127470%
B4708200.424809%
C4713450.954806%
D41622405.766458%

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 7120 5335 0 0 0.00% 0.00%
B 7119 5293 4 4 0.06% 0.08%
C 7120 5332 18 18 0.25% 0.34%
D 7119 4784 169 169 2.37% 3.53%

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 13 254 7623 63.16 550 539 112.2
A 3 137 4924 39.09 550 539 112.2
A 0 226 4845 38.39 550 539 112.2
B 3 209 25381 232.9 550 537 106.7
B 12 111 12883 115.74 550 537 106.7
B 3 64 11759 105.2 550 537 106.7
C 2 16 86134 684.14 528 533 125.1
C 14 238 83534 663.36 528 533 125.1
C 0 239 31691 249.02 528 533 125.1
D 8 195 1212674 10738.72 458 445 112.9
D 13 174 421345 3728.61 458 445 112.9
D 1 52 410798 3635.18 458 445 112.9

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