ASTROSAT CZTI

Data Quality Report

Orbit 34380

Creation date: 2022-02-07T10:07:54.357415
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/AS1A05_085T01_9000004910_34380cztM0_level2.evt modeM0/AS1A05_085T01_9000004910_34380cztM0_level2_quad_clean.evt
Size (bytes)517,080,96060,891,840
Size493.1 MB 58.1 MB
Events in quadrant A2,328,659423,374
Events in quadrant B3,946,709388,476
Events in quadrant C3,012,176412,278
Events in quadrant D6,044,309279,181

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100113
B0148762
C0120952
D0212862

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4833110.227602%
B483357411.876681%
C4833430.889717%
D4833133227.560521%

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 6956 4834 6 6 0.09% 0.12%
B 6956 4834 445 445 6.40% 9.21%
C 6956 4834 28 28 0.40% 0.58%
D 6955 4833 1289 1289 18.53% 26.67%

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 9 143 37134 313.78 580 570 116.5
A 10 83 33646 283.85 580 570 116.5
A 13 254 9416 75.91 580 570 116.5
B 5 172 1489268 14251.55 550 537 104.5
B 5 255 194777 1859.45 550 537 104.5
B 4 251 76068 723.05 550 537 104.5
C 4 254 406125 3135.33 561 566 129.4
C 15 214 205041 1580.77 561 566 129.4
C 0 10 119023 915.78 561 566 129.4
D 7 223 3018853 25755.0 476 463 117.2
D 8 195 560558 4779.12 476 463 117.2
D 2 249 198766 1692.06 476 463 117.2

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