ASTROSAT CZTI

Data Quality Report

Orbit 44283

Creation date: 2024-06-27T23:01:20.412147
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/AS1A13_077T01_9000005984_44283cztM0_level2.fits modeM0/AS1A13_077T01_9000005984_44283cztM0_level2_quad_clean.evt
Size (bytes)461,545,920107,550,720
Size440.2 MB 102.6 MB
Events in quadrant A5,178,653716,898
Events in quadrant B3,256,260747,498
Events in quadrant C3,121,849709,332
Events in quadrant D5,028,613634,537

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0208061
B0138821
C0135521
D0193011

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64332694.181564%
B6434961.492073%
C6434640.994716%
D64343104.818154%

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 7473 6433 127 127 1.70% 1.97%
B 7474 6435 17 17 0.23% 0.26%
C 7474 6435 9 9 0.12% 0.14%
D 7474 6434 210 210 2.81% 3.26%

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 1485803 9569.28 750 735 155.2
A 15 223 742983 4782.8 750 735 155.2
A 7 3 16802 103.53 750 735 155.2
B 0 219 89755 595.16 750 728 149.6
B 5 255 43180 283.8 750 728 149.6
B 0 155 41669 273.7 750 728 149.6
C 14 254 95643 541.48 741 745 175.3
C 3 233 65835 371.4 741 745 175.3
C 1 3 34178 190.77 741 745 175.3
D 1 52 1224826 6498.81 735 710 188.4
D 13 249 264845 1402.29 735 710 188.4
D 5 235 232548 1230.82 735 710 188.4

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