ASTROSAT CZTI

Data Quality Report

Orbit 12640

Creation date: 2024-06-27T16:30:23.316341
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/AS1G08_071T01_9000001874_12640cztM0_level2.evt modeM0/AS1G08_071T01_9000001874_12640cztM0_level2_quad_clean.evt
Size (bytes)201,024,00037,825,920
Size191.7 MB 36.1 MB
Events in quadrant A1,413,721242,591
Events in quadrant B1,613,784230,738
Events in quadrant C1,392,906246,333
Events in quadrant D1,485,663236,333

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015294
B0152100
C015189
D015292

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152629421
B01803011636
C01832912617
D0160529946

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A085
B084
C084
D072

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A26871355.024191%
B25601887.343750%
C2601672.575932%
D2683802.981737%

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 7971 3210 0 0 0.00% 0.00%
B 7880 2995 22 22 0.28% 0.73%
C 8018 3030 0 0 0.00% 0.00%
D 7975 3164 4 4 0.05% 0.13%

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 8 15 17288 220.78 361 351 76.7
A 14 239 3461 40.53 361 351 76.7
A 0 226 3194 37.05 361 351 76.7
B 4 239 157999 2284.83 341 331 69.0
B 11 51 83748 1208.83 341 331 69.0
B 3 209 21392 305.2 341 331 69.0
C 15 208 31576 370.56 348 350 84.3
C 13 61 2499 25.5 348 350 84.3
C 8 128 1518 13.86 348 350 84.3
D 13 249 73006 834.28 354 342 87.1
D 10 157 26939 305.37 354 342 87.1
D 1 52 16096 180.88 354 342 87.1

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