ASTROSAT CZTI

Data Quality Report

Orbit 33261

Creation date: 2024-06-27T20:46:45.319569
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/AS1A11_047T10_9000004778_33261cztM0_level2.evt modeM0/AS1A11_047T10_9000004778_33261cztM0_level2_quad_clean.evt
Size (bytes)941,368,320130,409,280
Size897.8 MB 124.4 MB
Events in quadrant A4,820,199839,850
Events in quadrant B7,692,353837,918
Events in quadrant C4,917,390823,509
Events in quadrant D10,391,436741,742

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0209774
B0297473
C0214563
D0378943

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02080
B02080
C02080
D02080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10190360.353288%
B101909999.803729%
C10190770.755643%
D10190112211.010795%

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 13596 10192 21 21 0.15% 0.21%
B 13596 10192 713 713 5.24% 7.00%
C 13596 10192 56 56 0.41% 0.55%
D 13596 10192 916 916 6.74% 8.99%

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 15 169 177527 747.06 1196 1172 236.1
A 13 254 17826 70.55 1196 1172 236.1
A 13 6 12450 47.78 1196 1172 236.1
B 5 172 2346279 11050.59 1130 1104 212.2
B 0 219 564787 2656.11 1130 1104 212.2
B 5 200 103613 483.03 1130 1104 212.2
C 0 10 233243 884.43 1145 1153 262.4
C 10 49 103497 390.0 1145 1153 262.4
C 14 254 58794 219.65 1145 1153 262.4
D 8 195 2796464 10443.99 1100 1068 267.7
D 2 250 1053601 3932.41 1100 1068 267.7
D 12 218 948882 3541.17 1100 1068 267.7

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