ASTROSAT CZTI

Data Quality Report

Orbit 28437

Creation date: 2024-06-27T19:51:44.071475
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_101T21_9000004090_28437cztM0_level2.evt modeM0/AS1A10_101T21_9000004090_28437cztM0_level2_quad_clean.evt
Size (bytes)1,400,261,760304,657,920
Size1.3 GB 290.5 MB
Events in quadrant A8,187,9702,035,283
Events in quadrant B8,987,3172,077,694
Events in quadrant C8,491,6121,986,386
Events in quadrant D15,521,8361,885,712

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0366260
B0386540
C0370760
D0583650

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A180351510.837261%
B180351861.031328%
C180341981.097926%
D18035223312.381480%

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 19725 18035 0 0 0.00% 0.00%
B 19725 18035 8 8 0.04% 0.04%
C 19724 18035 4 4 0.02% 0.02%
D 19725 18037 2309 2309 11.71% 12.80%

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 13 254 27609 60.09 2117 2068 425.0
A 3 137 21077 44.72 2117 2068 425.0
A 0 226 17605 36.55 2117 2068 425.0
B 10 245 310550 779.0 2096 2043 396.0
B 0 183 291794 731.64 2096 2043 396.0
B 15 222 59428 144.9 2096 2043 396.0
C 14 238 323929 680.41 2027 2035 473.1
C 7 220 184896 386.53 2027 2035 473.1
C 3 233 53681 109.17 2027 2035 473.1
D 8 195 4350892 9352.16 1973 1917 465.0
D 1 52 3163509 6798.78 1973 1917 465.0
D 2 250 335725 717.83 1973 1917 465.0

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