ASTROSAT CZTI

Data Quality Report

Orbit 35725

Creation date: 2022-05-10T13:58:51.582240
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_029T05_9000005124_35725cztM0_level2.evt modeM0/AS1A09_029T05_9000005124_35725cztM0_level2_quad_clean.evt
Size (bytes)390,579,84077,690,880
Size372.5 MB 74.1 MB
Events in quadrant A2,667,206516,271
Events in quadrant B2,730,326512,955
Events in quadrant C3,238,927479,861
Events in quadrant D2,836,390476,938

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111053
B0112362
C0128064
D0118572

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5236100.190985%
B5236250.477464%
C52351833.495702%
D5236671.279603%

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 7329 5237 0 0 0.00% 0.00%
B 7329 5237 12 12 0.16% 0.23%
C 7329 5237 179 179 2.44% 3.42%
D 7329 5237 52 52 0.71% 0.99%

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 156812 1209.59 644 633 129.1
A 13 6 10096 73.29 644 633 129.1
A 13 254 8153 58.24 644 633 129.1
B 5 172 131865 1086.0 633 618 120.9
B 15 85 36027 292.99 633 618 120.9
B 5 255 34022 276.4 633 618 120.9
C 0 207 296400 2137.07 597 601 138.4
C 1 23 225474 1624.65 597 601 138.4
C 15 214 221090 1592.97 597 601 138.4
D 13 249 203197 1365.49 610 592 148.4
D 2 249 64735 432.3 610 592 148.4
D 10 199 46799 311.42 610 592 148.4

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