ASTROSAT CZTI

Data Quality Report

Orbit 35798

Creation date: 2022-05-13T16:29:24.445694
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_029T10_9000005140_35798cztM0_level2.evt modeM0/AS1A09_029T10_9000005140_35798cztM0_level2_quad_clean.evt
Size (bytes)388,103,04079,211,520
Size370.1 MB 75.5 MB
Events in quadrant A2,524,527533,962
Events in quadrant B3,005,478526,150
Events in quadrant C2,653,125502,020
Events in quadrant D3,235,273490,534

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0103832
B0120181
C0107461
D0127731

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A492960.121729%
B4929831.683912%
C4929731.481031%
D49291042.109961%

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 7053 4930 0 0 0.00% 0.00%
B 7053 4930 63 63 0.89% 1.28%
C 7053 4930 67 67 0.95% 1.36%
D 7053 4930 102 102 1.45% 2.07%

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 121861 986.06 608 597 123.0
A 15 169 30661 244.46 608 597 123.0
A 13 6 16543 129.66 608 597 123.0
B 5 172 239615 2133.54 592 578 112.0
B 0 229 134481 1195.16 592 578 112.0
B 0 213 79564 704.99 592 578 112.0
C 0 10 221102 1702.87 564 567 129.5
C 15 214 204087 1571.49 564 567 129.5
C 0 207 21108 158.61 564 567 129.5
D 13 249 342209 2436.65 576 561 140.2
D 8 195 235447 1675.22 576 561 140.2
D 10 199 146973 1044.22 576 561 140.2

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