ASTROSAT CZTI

Data Quality Report

Orbit 34873

Creation date: 2024-06-27T21:06:27.007279
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/AS1C07_005T01_9000004992_34873cztM0_level2.evt modeM0/AS1C07_005T01_9000004992_34873cztM0_level2_quad_clean.evt
Size (bytes)2,356,724,160432,918,720
Size2.2 GB 412.9 MB
Events in quadrant A16,383,1872,858,250
Events in quadrant B19,637,1422,893,818
Events in quadrant C14,007,0122,885,930
Events in quadrant D19,599,1372,688,258

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01210
B01210
C01210
D01210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0651597
B0747076
C0560526
D0755446

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05320
B05320
C05320
D05320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2597210013.854151%
B2597219007.315571%
C259721810.696904%
D259729123.511474%

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 38077 25976 792 792 2.08% 3.05%
B 38077 25977 1463 1463 3.84% 5.63%
C 38077 25978 149 149 0.39% 0.57%
D 38077 25978 875 875 2.30% 3.37%

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 3247381 5371.14 3070 3014 604.0
A 15 237 872645 1439.7 3070 3014 604.0
A 10 83 179070 291.47 3070 3014 604.0
B 5 172 2602529 4628.63 3060 2982 561.6
B 5 31 2074236 3687.98 3060 2982 561.6
B 5 15 1128565 2004.16 3060 2982 561.6
C 15 214 1085706 1580.0 3041 3069 685.2
C 0 10 536026 777.8 3041 3069 685.2
C 0 207 269780 389.24 3041 3069 685.2
D 8 195 3287320 4493.11 3009 2928 731.0
D 1 52 1300324 1774.86 3009 2928 731.0
D 13 249 764953 1042.47 3009 2928 731.0

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