ASTROSAT CZTI

Data Quality Report

Orbit 12546

Creation date: 2024-06-27T16:28:58.066932
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_130T01_9000001856_12546cztM0_level2.evt modeM0/AS1A04_130T01_9000001856_12546cztM0_level2_quad_clean.evt
Size (bytes)122,736,96029,917,440
Size117.1 MB 28.5 MB
Events in quadrant A916,497203,553
Events in quadrant B980,329200,771
Events in quadrant C709,592200,244
Events in quadrant D1,006,107189,788

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A037511
B038711
C030751
D040181

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1500100.666667%
B1500694.600000%
C150010.066667%
D1500593.933333%

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 1501 1501 1 1 0.07% 0.07%
B 1501 1501 41 41 2.73% 2.73%
C 1501 1501 0 0 0.00% 0.00%
D 1501 1501 33 33 2.20% 2.20%

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 1 162 53756 1332.75 190 186 40.2
A 1 178 33201 821.37 190 186 40.2
A 1 161 27891 689.26 190 186 40.2
B 4 239 215941 5835.01 185 180 37.0
B 0 230 18035 482.87 185 180 37.0
B 15 222 13373 356.79 185 180 37.0
C 13 61 1391 27.82 181 182 43.5
C 3 202 474 6.72 181 182 43.5
C 7 247 448 6.12 181 182 43.5
D 13 104 131062 2984.31 181 176 43.9
D 8 195 112919 2570.63 181 176 43.9
D 1 52 64366 1463.58 181 176 43.9

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