ASTROSAT CZTI

Data Quality Report

Orbit 15153

Creation date: 2024-06-27T17:04:29.056774
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_218T08_9000002236_15153cztM0_level2.evt modeM0/AS1A04_218T08_9000002236_15153cztM0_level2_quad_clean.evt
Size (bytes)478,013,760103,933,440
Size455.9 MB 99.1 MB
Events in quadrant A3,512,105677,889
Events in quadrant B3,330,495696,934
Events in quadrant C3,529,877685,243
Events in quadrant D3,669,569640,893

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146483
B0139962
C0144372
D0153842

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6404170.265459%
B6404600.936914%
C6404180.281074%
D6404831.296065%

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 7745 6406 0 0 0.00% 0.00%
B 7745 6406 29 29 0.37% 0.45%
C 7745 6406 3 3 0.04% 0.05%
D 7745 6406 88 88 1.14% 1.37%

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 15 239 440847 2776.26 789 775 158.5
A 12 189 33102 203.94 789 775 158.5
A 0 226 6905 38.67 789 775 158.5
B 3 64 118440 779.45 801 783 150.9
B 0 229 48454 315.81 801 783 150.9
B 12 111 16705 105.48 801 783 150.9
C 3 233 507640 2861.89 774 780 177.1
C 13 61 5630 27.38 774 780 177.1
C 9 236 2331 8.76 774 780 177.1
D 2 33 340597 1864.35 759 739 182.3
D 2 16 300890 1646.53 759 739 182.3
D 13 172 55342 299.53 759 739 182.3

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