ASTROSAT CZTI

Data Quality Report

Orbit 41946

Creation date: 2024-06-27T22:34:50.022350
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/AS1A12_099T03_9000005720_41946cztM0_level2.fits modeM0/AS1A12_099T03_9000005720_41946cztM0_level2_quad_clean.evt
Size (bytes)686,681,280169,104,960
Size654.9 MB 161.3 MB
Events in quadrant A5,516,6091,145,158
Events in quadrant B6,390,9391,120,486
Events in quadrant C5,155,2981,109,233
Events in quadrant D7,521,6161,000,690

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0227733
B0266023
C0223043
D0298249

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02180
B02180
C02180
D02180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0320
C0320
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10754250.232472%
B107544934.584341%
C10754360.334759%
D107534904.556868%

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 13529 10756 8 8 0.06% 0.07%
B 13529 10756 368 368 2.72% 3.42%
C 13529 10756 24 24 0.18% 0.22%
D 13528 10755 475 475 3.51% 4.42%

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 10 83 982954 4138.03 1163 1138 237.3
A 14 250 15395 60.09 1163 1138 237.3
A 13 254 14899 58.0 1163 1138 237.3
B 0 229 1202056 5519.07 1126 1093 217.6
B 5 255 641589 2943.42 1126 1093 217.6
B 0 190 74468 337.2 1126 1093 217.6
C 15 214 470124 1775.46 1131 1138 264.1
C 14 254 217181 817.88 1131 1138 264.1
C 10 22 25247 91.27 1131 1138 264.1
D 2 249 1088285 3969.72 1117 1086 273.9
D 5 222 826498 3013.85 1117 1086 273.9
D 13 249 525900 1916.27 1117 1086 273.9

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