ASTROSAT CZTI

Data Quality Report

Orbit 09257

Creation date: 2024-06-27T15:43:24.817107
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/AS1A03_062T04_9000001298_09257cztM0_level2.evt modeM0/AS1A03_062T04_9000001298_09257cztM0_level2_quad_clean.evt
Size (bytes)305,288,64050,693,760
Size291.1 MB 48.3 MB
Events in quadrant A2,846,514307,052
Events in quadrant B2,079,971316,639
Events in quadrant C1,987,922309,276
Events in quadrant D2,043,186304,442

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011481231
B09069105
C0887998
D0909581

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0884
B0882
C0882
D0884

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4208982.328897%
B4229501.182313%
C4229260.614803%
D4237481.132877%

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 5040 4269 52 52 1.03% 1.22%
B 5040 4272 0 0 0.00% 0.00%
C 5040 4274 0 0 0.00% 0.00%
D 5040 4275 6 6 0.12% 0.14%

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 5 773529 7359.92 506 494 105.0
A 13 248 56745 535.56 506 494 105.0
A 1 162 24902 232.38 506 494 105.0
B 0 219 37401 366.74 514 501 100.6
B 0 214 17971 173.63 514 501 100.6
B 4 173 17561 169.56 514 501 100.6
C 9 68 36938 312.34 497 499 116.7
C 14 234 9148 74.14 497 499 116.7
C 13 61 3743 27.81 497 499 116.7
D 2 136 83963 693.04 494 482 120.5
D 1 52 42454 348.44 494 482 120.5
D 7 71 20808 168.74 494 482 120.5

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