ASTROSAT CZTI

Data Quality Report

Orbit 26356

Creation date: 2024-06-27T19:28:08.866827
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/AS1A09_143T08_9000003806_26356cztM0_level2.evt modeM0/AS1A09_143T08_9000003806_26356cztM0_level2_quad_clean.evt
Size (bytes)217,008,00053,115,840
Size207.0 MB 50.7 MB
Events in quadrant A1,379,496366,467
Events in quadrant B1,257,135374,661
Events in quadrant C1,535,500346,571
Events in quadrant D2,226,542339,157

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A058180
B054200
C062960
D084260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2522331.308485%
B252390.356718%
C2523602.378121%
D25231024.042806%

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 2522 2522 18 18 0.71% 0.71%
B 2523 2523 2 2 0.08% 0.08%
C 2523 2523 18 18 0.71% 0.71%
D 2523 2523 93 93 3.69% 3.69%

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 0 13 159476 2489.41 316 310 63.9
A 13 254 4684 68.41 316 310 63.9
A 0 226 2733 37.9 316 310 63.9
B 12 16 12022 199.01 315 309 58.9
B 5 172 8980 147.33 315 309 58.9
B 0 230 7214 117.32 315 309 58.9
C 3 233 198388 2779.33 302 304 71.3
C 2 16 98868 1382.96 302 304 71.3
C 14 238 47962 668.69 302 304 71.3
D 1 52 986309 13364.75 305 298 73.8
D 7 80 39669 533.65 305 298 73.8
D 2 234 11148 147.06 305 298 73.8

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