ASTROSAT CZTI

Data Quality Report

Orbit 11854

Creation date: 2024-06-27T16:19:10.564392
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_088T03_9000001750_11854cztM0_level2.evt modeM0/AS1A04_088T03_9000001750_11854cztM0_level2_quad_clean.evt
Size (bytes)450,083,52093,651,840
Size429.2 MB 89.3 MB
Events in quadrant A3,233,534611,338
Events in quadrant B3,566,580621,755
Events in quadrant C2,881,437604,275
Events in quadrant D3,527,367565,529

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136463
B0146302
C0127952
D0147722

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6209400.644226%
B62091692.721855%
C6209140.225479%
D62091452.335320%

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 7565 6212 4 4 0.05% 0.06%
B 7565 6212 59 59 0.78% 0.95%
C 7565 6212 0 0 0.00% 0.00%
D 7565 6212 124 124 1.64% 2.00%

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 1 162 122788 797.92 761 747 152.9
A 1 178 61753 398.87 761 747 152.9
A 1 161 53550 345.23 761 747 152.9
B 4 239 455977 3208.26 764 746 141.9
B 15 204 38866 268.65 764 746 141.9
B 11 51 27213 186.53 764 746 141.9
C 13 61 5483 28.02 738 743 169.1
C 3 202 1836 6.46 738 743 169.1
C 7 247 1795 6.22 738 743 169.1
D 1 52 521782 3081.88 719 699 169.1
D 13 104 150315 884.89 719 699 169.1
D 10 199 31440 181.81 719 699 169.1

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