ASTROSAT CZTI

Data Quality Report

Orbit 19434

Creation date: 2024-06-27T18:02:52.217981
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/AS1A05_221T01_9000002888_19434cztM0_level2.evt modeM0/AS1A05_221T01_9000002888_19434cztM0_level2_quad_clean.evt
Size (bytes)900,691,200151,007,040
Size859.0 MB 144.0 MB
Events in quadrant A5,954,508943,996
Events in quadrant B6,293,206957,720
Events in quadrant C6,097,131929,374
Events in quadrant D8,116,217907,721

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A028741
B029351
C029148
D029246

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0241
B0241
C0241
D0252

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0298354781
B0311875028
C0300864716
D0374665417

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12070740.613090%
B121001551.280992%
C120711751.449756%
D120705684.705882%

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 23133 12216 3 3 0.01% 0.02%
B 23133 12257 28 28 0.12% 0.23%
C 23133 12230 3 3 0.01% 0.02%
D 23133 12221 408 408 1.76% 3.34%

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 3 1 120830 388.82 1506 1471 307.0
A 13 254 17978 53.77 1506 1471 307.0
A 12 96 15597 46.02 1506 1471 307.0
B 7 220 174394 603.51 1501 1463 286.5
B 0 198 66598 227.31 1501 1463 286.5
B 0 197 47857 161.91 1501 1463 286.5
C 14 238 224821 658.27 1447 1459 339.3
C 3 233 157982 461.29 1447 1459 339.3
C 9 221 63706 183.45 1447 1459 339.3
D 7 238 1995990 5656.82 1447 1403 352.6
D 1 52 464169 1312.45 1447 1403 352.6
D 12 218 57352 158.68 1447 1403 352.6

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