ASTROSAT CZTI

Data Quality Report

Orbit 17632

Creation date: 2024-06-27T17:38:54.514302
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/AS1A05_118T02_9000002612_17632cztM0_level2.evt modeM0/AS1A05_118T02_9000002612_17632cztM0_level2_quad_clean.evt
Size (bytes)462,928,32083,450,880
Size441.5 MB 79.6 MB
Events in quadrant A3,573,464526,444
Events in quadrant B3,314,607533,861
Events in quadrant C3,467,104509,555
Events in quadrant D3,222,290502,950

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146312
B0137452
C0140232
D0138242

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6520821.257669%
B6520691.058282%
C6519671.027765%
D6519560.859027%

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 7490 6522 30 30 0.40% 0.46%
B 7490 6522 11 11 0.15% 0.17%
C 7489 6521 0 0 0.00% 0.00%
D 7489 6521 14 14 0.19% 0.21%

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 14 237 444837 2690.49 814 797 165.0
A 0 226 7299 39.4 814 797 165.0
A 12 194 5866 30.71 814 797 165.0
B 0 230 69978 451.42 804 786 153.3
B 7 220 57636 370.9 804 786 153.3
B 12 111 18315 114.36 804 786 153.3
C 3 233 310925 1721.69 772 776 180.1
C 14 238 118804 655.19 772 776 180.1
C 5 218 16054 84.81 772 776 180.1
D 13 189 178909 926.49 789 764 192.3
D 2 234 24416 123.01 789 764 192.3
D 10 70 12106 58.99 789 764 192.3

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