ASTROSAT CZTI

Data Quality Report

Orbit 34452

Creation date: 2022-02-10T22:57:55.096459
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/AS1A10_058T06_9000004920_34452cztM0_level2.evt modeM0/AS1A10_058T06_9000004920_34452cztM0_level2_quad_clean.evt
Size (bytes)528,456,96070,611,840
Size504.0 MB 67.3 MB
Events in quadrant A2,704,198463,505
Events in quadrant B3,902,621454,420
Events in quadrant C4,035,979444,192
Events in quadrant D5,016,924418,763

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111103
B0148702
C0157622
D0184672

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5097110.215813%
B50973546.945262%
C5097641.255641%
D50973617.082598%

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 7220 5098 1 1 0.01% 0.02%
B 7220 5098 249 249 3.45% 4.88%
C 7220 5098 37 37 0.51% 0.73%
D 7220 5098 323 323 4.47% 6.34%

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 37975 275.52 680 670 135.4
A 15 169 18666 132.91 680 670 135.4
A 13 254 8867 60.54 680 670 135.4
B 5 172 572033 4642.69 659 645 123.1
B 0 229 557662 4525.92 659 645 123.1
B 4 171 78320 631.13 659 645 123.1
C 4 254 1128310 7664.69 644 652 147.1
C 15 214 215452 1460.0 644 652 147.1
C 0 10 67057 451.35 644 652 147.1
D 8 195 1057574 6302.87 625 614 167.7
D 12 235 718094 4278.48 625 614 167.7
D 2 249 302676 1801.26 625 614 167.7

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