ASTROSAT CZTI

Data Quality Report

Orbit 25994

Creation date: 2024-06-27T19:23:37.781131
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_068T01_9000003760_25994cztM0_level2.evt modeM0/AS1A07_068T01_9000003760_25994cztM0_level2_quad_clean.evt
Size (bytes)800,297,280167,253,120
Size763.2 MB 159.5 MB
Events in quadrant A5,684,2341,094,389
Events in quadrant B5,863,3621,094,671
Events in quadrant C5,715,3011,045,438
Events in quadrant D6,208,0831,048,417

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0239820
B0244730
C0241220
D0255360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11316820.724638%
B113161291.139979%
C113161701.502298%
D113161451.281372%

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 13561 11317 2 2 0.01% 0.02%
B 13561 11317 11 11 0.08% 0.10%
C 13561 11317 0 0 0.00% 0.00%
D 13561 11318 71 71 0.52% 0.63%

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 13 254 15737 48.95 1473 1448 291.9
A 3 137 13075 39.83 1473 1448 291.9
A 0 226 12628 38.3 1473 1448 291.9
B 10 245 160275 584.29 1447 1411 271.9
B 12 111 32928 115.92 1447 1411 271.9
B 11 111 30005 105.17 1447 1411 271.9
C 14 238 230086 704.16 1402 1410 324.7
C 3 233 11980 32.55 1402 1410 324.7
C 0 207 10711 28.64 1402 1410 324.7
D 1 52 453087 1342.61 1424 1390 336.4
D 7 80 310005 917.32 1424 1390 336.4
D 12 233 55417 160.59 1424 1390 336.4

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