ASTROSAT CZTI

Data Quality Report

Orbit 20191229_A08_004T03_9000003400_level2

Creation date: 2019-12-31T16:27:59.506359
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1A08_004T03_9000003400cztM0_level2_bc.evt modeM0/AS1A08_004T03_9000003400cztM0_level2_quad_clean.evt
Size (bytes)3,902,267,5201,340,634,240
Size3.6 GB 1.2 GB
Events in quadrant A22,211,9498,510,374
Events in quadrant B24,101,6598,636,567
Events in quadrant C23,915,3158,200,959
Events in quadrant D40,671,5587,933,319

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02213490
B02273560
C02299620
D02806000

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021800
B021800
C021800
D021800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01670
B01680
C01680
D01680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10688611881.111465%
B10688618011.684973%
C10688524342.277214%
D10688537313.490668%

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 127549 106892 1 1 0.00% 0.00%
B 127549 106889 138 138 0.11% 0.13%
C 127549 106888 156 156 0.12% 0.15%
D 127549 106888 778 778 0.61% 0.73%

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 11 47 285714 228.23 5666 5565 1227.5
A 13 254 149305 117.1 5666 5565 1227.5
A 14 237 37577 26.08 5666 5565 1227.5
B 4 216 812864 754.12 5730 5592 1070.5
B 0 189 656312 607.88 5730 5592 1070.5
B 0 190 276765 253.32 5730 5592 1070.5
C 9 15 1507698 1166.54 5463 5440 1287.8
C 10 9 413174 316.62 5463 5440 1287.8
C 10 223 409145 313.49 5463 5440 1287.8
D 1 52 9648993 7507.0 5523 5330 1284.6
D 12 227 2962762 2302.18 5523 5330 1284.6
D 13 174 2425818 1884.2 5523 5330 1284.6

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