ASTROSAT CZTI

Data Quality Report

Orbit 11276

Creation date: 2024-06-27T16:10:37.576723
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/AS1A04_044T01_9000001648_11276cztM0_level2.evt modeM0/AS1A04_044T01_9000001648_11276cztM0_level2_quad_clean.evt
Size (bytes)572,037,120101,125,440
Size545.5 MB 96.4 MB
Events in quadrant A4,310,108649,562
Events in quadrant B5,525,897681,205
Events in quadrant C3,075,813660,896
Events in quadrant D3,966,905612,476

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170643
B0207992
C0135582
D0163382

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65763635.520073%
B657678111.876521%
C6576100.152068%
D65761462.220195%

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 7831 6577 246 246 3.14% 3.74%
B 7831 6576 384 384 4.90% 5.84%
C 7831 6577 0 0 0.00% 0.00%
D 7831 6577 111 111 1.42% 1.69%

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 979692 6095.13 786 772 160.6
A 8 5 159368 987.48 786 772 160.6
A 1 162 48071 294.5 786 772 160.6
B 4 239 1095828 7349.57 785 766 149.0
B 3 64 980663 6576.63 785 766 149.0
B 0 214 195650 1307.97 785 766 149.0
C 9 54 7451 36.16 787 791 184.2
C 13 61 5788 27.13 787 791 184.2
C 3 202 1866 5.84 787 791 184.2
D 10 253 200842 1089.35 764 744 183.7
D 2 120 169496 918.7 764 744 183.7
D 13 152 168151 911.38 764 744 183.7

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