ASTROSAT CZTI

Data Quality Report

Orbit 18223

Creation date: 2024-06-27T17:46:58.102677
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/AS1C04_009T03_9000002714_18223cztM0_level2.evt modeM0/AS1C04_009T03_9000002714_18223cztM0_level2_quad_clean.evt
Size (bytes)586,699,200172,215,360
Size559.5 MB 164.2 MB
Events in quadrant A4,517,8971,169,099
Events in quadrant B4,285,5101,193,070
Events in quadrant C3,998,3691,133,398
Events in quadrant D4,372,7881,113,650

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0192951
B0185031
C0177941
D0191641

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01780
B01780
C01780
D01780

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A87431531.749971%
B87431011.155210%
C8744470.537511%
D8744921.052150%

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 9963 8744 90 90 0.90% 1.03%
B 9963 8744 45 45 0.45% 0.51%
C 9964 8745 0 0 0.00% 0.00%
D 9964 8745 67 67 0.67% 0.77%

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 543835 2659.94 1029 1006 204.1
A 8 34 11772 52.76 1029 1006 204.1
A 0 226 9010 39.22 1029 1006 204.1
B 7 220 203905 1071.19 1029 1004 189.4
B 0 189 23067 116.48 1029 1004 189.4
B 12 111 21461 108.0 1029 1004 189.4
C 14 238 156226 691.2 982 987 224.6
C 0 207 10090 40.53 982 987 224.6
C 13 61 6965 26.62 982 987 224.6
D 1 52 346450 1454.65 997 969 237.5
D 7 238 133426 557.71 997 969 237.5
D 2 234 37012 151.76 997 969 237.5

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