ASTROSAT CZTI

Data Quality Report

Orbit 34978

Creation date: 2022-03-19T16:52:55.381417
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/AS1A10_123T09_9000005012_34978cztM0_level2.evt modeM0/AS1A10_123T09_9000005012_34978cztM0_level2_quad_clean.evt
Size (bytes)489,844,80077,279,040
Size467.2 MB 73.7 MB
Events in quadrant A2,747,792483,488
Events in quadrant B3,368,927485,404
Events in quadrant C3,033,249490,770
Events in quadrant D5,274,923458,316

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122213
B0140972
C0126762
D0200442

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A604660.099239%
B60461552.563678%
C6046340.562355%
D60463555.871651%

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 7329 6047 0 0 0.00% 0.00%
B 7329 6047 115 115 1.57% 1.90%
C 7329 6047 29 29 0.40% 0.48%
D 7329 6047 273 273 3.72% 4.51%

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 10 83 74795 535.26 684 669 138.5
A 13 6 11756 80.06 684 669 138.5
A 13 254 9970 67.16 684 669 138.5
B 5 172 628635 4748.8 676 656 132.2
B 0 190 34875 258.77 676 656 132.2
B 5 63 22901 168.22 676 656 132.2
C 15 214 251450 1613.41 668 672 155.4
C 0 10 133604 855.23 668 672 155.4
C 14 67 29268 183.98 668 672 155.4
D 8 195 1292536 8098.93 655 639 159.5
D 2 249 582103 3645.21 655 639 159.5
D 1 47 409023 2560.17 655 639 159.5

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