ASTROSAT CZTI

Data Quality Report

Orbit 14460

Creation date: 2024-06-27T16:55:28.247551
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/AS1G08_025T01_9000002130_14460cztM0_level2.evt modeM0/AS1G08_025T01_9000002130_14460cztM0_level2_quad_clean.evt
Size (bytes)461,615,040101,082,240
Size440.2 MB 96.4 MB
Events in quadrant A3,099,408674,263
Events in quadrant B3,294,507674,969
Events in quadrant C3,192,818661,225
Events in quadrant D3,974,075619,905

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131203
B0137532
C0132302
D0157882

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6170370.599676%
B6170851.377634%
C6170330.534846%
D61702764.473258%

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 7536 6172 2 2 0.03% 0.03%
B 7536 6172 12 12 0.16% 0.19%
C 7536 6172 0 0 0.00% 0.00%
D 7536 6172 220 220 2.92% 3.56%

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 12 189 40497 251.42 787 772 158.0
A 8 15 20539 125.11 787 772 158.0
A 0 226 7165 40.46 787 772 158.0
B 0 189 51660 346.93 789 771 146.7
B 0 85 48705 326.78 789 771 146.7
B 0 182 33205 221.12 789 771 146.7
C 3 233 199374 1130.97 765 772 175.6
C 0 207 5838 28.85 765 772 175.6
C 13 61 5584 27.4 765 772 175.6
D 13 122 422154 2156.29 731 719 195.4
D 10 199 374913 1914.58 731 719 195.4
D 12 110 289447 1477.29 731 719 195.4

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