ASTROSAT CZTI

Data Quality Report

Orbit 23649

Creation date: 2024-06-27T18:57:10.454958
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_147T01_9000003490_23649cztM0_level2.evt modeM0/AS1A07_147T01_9000003490_23649cztM0_level2_quad_clean.evt
Size (bytes)1,174,697,280216,616,320
Size1.1 GB 206.6 MB
Events in quadrant A7,602,8691,386,202
Events in quadrant B10,313,1551,395,130
Events in quadrant C7,790,5231,351,493
Events in quadrant D8,793,1141,329,881

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03273
B03273
C03284
D03284

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A033441462
B041290470
C033589458
D037387443

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A159092801.760010%
B1591310536.617231%
C159123752.356712%
D159213832.405628%

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 35855 15948 0 0 0.00% 0.00%
B 35852 15951 527 527 1.47% 3.30%
C 35878 15953 3 3 0.01% 0.02%
D 35854 15962 120 120 0.33% 0.75%

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 27031 62.92 1971 1929 398.9
A 3 137 17964 40.19 1971 1929 398.9
A 0 226 16935 37.62 1971 1929 398.9
B 3 64 2079011 5607.94 1926 1883 370.4
B 0 229 399245 1072.82 1926 1883 370.4
B 0 189 147988 394.46 1926 1883 370.4
C 14 238 293356 653.45 1898 1914 446.0
C 10 91 41540 88.85 1898 1914 446.0
C 8 128 15459 30.37 1898 1914 446.0
D 1 52 743759 1574.97 1919 1864 471.1
D 9 85 379024 800.67 1919 1864 471.1
D 12 233 209574 440.95 1919 1864 471.1

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