ASTROSAT CZTI

Data Quality Report

Orbit 38797

Creation date: 2024-06-27T21:56:32.529935
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/AS1A12_044T04_9000005396_38797cztM0_level2.fits modeM0/AS1A12_044T04_9000005396_38797cztM0_level2_quad_clean.evt
Size (bytes)437,376,96081,368,640
Size417.1 MB 77.6 MB
Events in quadrant A2,625,038579,525
Events in quadrant B2,559,818597,010
Events in quadrant C2,453,341568,682
Events in quadrant D8,165,841370,608

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106672
B0108131
C0101391
D0276981

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A496590.181269%
B4965601.208459%
C4965100.201410%
D4965175235.287009%

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 7028 4966 5 5 0.07% 0.10%
B 7028 4966 43 43 0.61% 0.87%
C 7028 4966 6 6 0.09% 0.12%
D 7028 4966 1659 1659 23.61% 33.41%

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 392034 3454.67 562 552 113.3
A 13 248 25988 224.46 562 552 113.3
A 7 16 10810 90.52 562 552 113.3
B 4 171 214097 1976.78 561 546 108.0
B 0 186 66303 608.69 561 546 108.0
B 0 230 21745 196.23 561 546 108.0
C 15 214 220671 1706.03 554 558 129.0
C 0 10 39292 300.22 554 558 129.0
C 15 208 10078 73.79 554 558 129.0
D 12 235 4119167 35498.15 479 466 116.0
D 13 249 790638 6810.31 479 466 116.0
D 5 222 458632 3948.83 479 466 116.0

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