ASTROSAT CZTI

Data Quality Report

Orbit 13274

Creation date: 2024-06-27T16:38:36.532779
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/AS1A04_167T02_9000001974_13274cztM0_level2.evt modeM0/AS1A04_167T02_9000001974_13274cztM0_level2_quad_clean.evt
Size (bytes)552,049,92096,609,600
Size526.5 MB 92.1 MB
Events in quadrant A4,064,174619,574
Events in quadrant B4,202,957622,849
Events in quadrant C3,041,146651,483
Events in quadrant D4,987,473595,967

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163013
B0164592
C0131072
D0192682

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62531762.814649%
B62535989.563410%
C6253370.591716%
D62533976.348953%

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 7474 6255 101 101 1.35% 1.61%
B 7474 6254 318 318 4.25% 5.08%
C 7474 6255 1 1 0.01% 0.02%
D 7474 6255 274 274 3.67% 4.38%

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 15 239 814667 5212.04 772 758 156.2
A 8 15 226400 1444.95 772 758 156.2
A 4 2 41007 257.74 772 758 156.2
B 4 239 1161140 8499.0 728 712 136.5
B 0 244 95211 692.11 728 712 136.5
B 4 173 43108 310.51 728 712 136.5
C 6 96 23341 127.59 771 778 176.8
C 15 208 7585 38.49 771 778 176.8
C 13 61 5542 26.94 771 778 176.8
D 1 52 2007674 11256.63 740 718 178.3
D 5 222 127290 709.92 740 718 178.3
D 8 195 31652 173.5 740 718 178.3

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