ASTROSAT CZTI

Data Quality Report

Orbit 22574

Creation date: 2024-06-27T18:42:59.798174
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_054T01_9000003348_22574cztM0_level2.evt modeM0/AS1A07_054T01_9000003348_22574cztM0_level2_quad_clean.evt
Size (bytes)1,184,909,760302,515,200
Size1.1 GB 288.5 MB
Events in quadrant A9,060,3281,998,100
Events in quadrant B8,600,7222,014,098
Events in quadrant C8,510,8911,942,549
Events in quadrant D8,459,4881,932,210

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03760
B03760
C03760
D03760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0393593
B0378493
C0376723
D0384523

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A185271500.809629%
B185281620.874352%
C185281660.895941%
D185281230.663860%

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 20352 18530 0 0 0.00% 0.00%
B 20353 18531 6 6 0.03% 0.03%
C 20353 18531 4 4 0.02% 0.02%
D 20353 18531 34 34 0.17% 0.18%

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 34 715253 1648.88 2163 2117 432.5
A 13 254 30459 65.53 2163 2117 432.5
A 3 137 18910 38.83 2163 2117 432.5
B 12 111 50348 119.72 2152 2096 403.0
B 11 111 44351 104.84 2152 2096 403.0
B 0 230 41654 98.15 2152 2096 403.0
C 14 238 326766 673.71 2075 2083 481.9
C 10 222 41056 80.87 2075 2083 481.9
C 10 22 24053 45.59 2075 2083 481.9
D 12 0 143096 276.05 2106 2042 511.0
D 2 136 139218 268.46 2106 2042 511.0
D 1 52 119102 229.1 2106 2042 511.0

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