ASTROSAT CZTI

Data Quality Report

Orbit 20220507_A09_029T05_9000005124_level2

Creation date: 2022-05-14T11:13:21.558873
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_9000005124cztM0_level2_bc.evt modeM0/AS1A09_029T05_9000005124cztM0_level2_quad_clean.evt
Size (bytes)1,171,615,680394,159,680
Size1.1 GB 375.9 MB
Events in quadrant A7,476,8162,498,639
Events in quadrant B7,680,3302,511,301
Events in quadrant C9,401,0462,429,366
Events in quadrant D8,789,4342,349,755

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06380
B06380
C06380
D06380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0657890
B0679300
C0710770
D0713820

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01050
B01050
C01050
D01050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A312711600.511656%
B312713181.016917%
C312704381.400704%
D312715271.685268%

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 54119 31277 15 15 0.03% 0.05%
B 54118 31271 20 20 0.04% 0.06%
C 54118 31269 129 129 0.24% 0.41%
D 54118 31269 55 55 0.10% 0.18%

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 668254 1877.07 1595 1566 355.2
A 15 169 506596 1421.92 1595 1566 355.2
A 13 6 81009 223.67 1595 1566 355.2
B 5 172 945886 2945.32 1598 1562 320.6
B 4 81 172215 532.26 1598 1562 320.6
B 5 255 151600 467.96 1598 1562 320.6
C 15 214 1234954 3550.84 1522 1506 347.4
C 0 207 920952 2646.89 1522 1506 347.4
C 0 10 695165 1996.9 1522 1506 347.4
D 13 249 1070108 2926.13 1545 1500 365.2
D 1 52 246299 670.32 1545 1500 365.2
D 14 52 218037 592.93 1545 1500 365.2

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