ASTROSAT CZTI

Data Quality Report

Orbit 08635

Creation date: 2024-06-27T15:35:15.716438
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/AS1G07_024T01_9000001206_08635cztM0_level2.evt modeM0/AS1G07_024T01_9000001206_08635cztM0_level2_quad_clean.evt
Size (bytes)1,103,146,560309,090,240
Size1.0 GB 294.8 MB
Events in quadrant A7,705,9132,045,980
Events in quadrant B8,384,8792,096,670
Events in quadrant C7,732,0882,043,102
Events in quadrant D8,394,7561,964,235

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0358526
B0367988
C0357079
D0377498

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03560
B03560
C03560
D03560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A176011710.971536%
B176001410.801136%
C17599840.477300%
D176002281.295455%

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 19657 17603 8 8 0.04% 0.05%
B 19657 17604 14 14 0.07% 0.08%
C 19657 17603 0 0 0.00% 0.00%
D 19657 17603 80 80 0.41% 0.45%

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 15 174 61936 148.71 1981 1935 403.5
A 5 16 19300 43.04 1981 1935 403.5
A 0 226 18633 41.38 1981 1935 403.5
B 0 214 184787 480.66 2000 1953 380.4
B 4 173 91782 236.16 2000 1953 380.4
B 0 168 65389 166.77 2000 1953 380.4
C 14 67 98996 217.78 1933 1937 445.7
C 8 208 55375 119.91 1933 1937 445.7
C 8 222 16692 33.11 1933 1937 445.7
D 12 221 271447 568.99 1932 1870 473.8
D 13 29 147576 307.54 1932 1870 473.8
D 13 105 147141 306.62 1932 1870 473.8

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