ASTROSAT CZTI

Data Quality Report

Orbit 42911

Creation date: 2024-06-27T22:45:43.228703
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/AS1T05_143T01_9000005830_42911cztM0_level2.fits modeM0/AS1T05_143T01_9000005830_42911cztM0_level2_quad_clean.evt
Size (bytes)317,108,16080,953,920
Size302.4 MB 77.2 MB
Events in quadrant A2,903,018541,080
Events in quadrant B2,201,640560,637
Events in quadrant C2,405,257537,986
Events in quadrant D3,846,986467,793

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117572
B0102172
C0103692
D0149902

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0330
C0330
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4892891.819297%
B4892250.511038%
C4892160.327065%
D48923817.788226%

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 6985 4893 67 67 0.96% 1.37%
B 6985 4893 17 17 0.24% 0.35%
C 6985 4893 12 12 0.17% 0.25%
D 6985 4893 418 418 5.98% 8.54%

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 530119 5052.37 510 500 104.8
A 15 237 277365 2641.19 510 500 104.8
A 15 190 63550 601.47 510 500 104.8
B 5 172 107067 1068.47 517 500 99.7
B 4 171 41708 413.16 517 500 99.7
B 5 255 17228 167.72 517 500 99.7
C 15 214 200713 1670.32 510 514 119.9
C 14 254 90464 750.48 510 514 119.9
C 12 2 82592 684.8 510 514 119.9
D 1 47 637033 5270.88 491 474 120.8
D 12 6 404070 3341.89 491 474 120.8
D 13 249 327388 2706.94 491 474 120.8

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